回答編集履歴
4
d
answer
CHANGED
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@@ -1,9 +1,50 @@
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1
1
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```python
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2
2
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s = 0 # 累積和
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3
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-
i =
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3
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+
i = 0 # 初期値
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4
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-
while s + i < 500:
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4
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+
while s + i + 1 < 500:
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5
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+
# 500 を超えない場合
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6
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+
i += 1
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5
7
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s += i
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6
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-
i += 1
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7
8
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8
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-
print(s, i) #
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9
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+
print(s, i) # 496 31
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10
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+
```
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11
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+
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12
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+
1+2+…+31 = 496
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13
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+
1+2+…+32 = 528
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14
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+
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15
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+
なので、1~31までの数の和が500を超えない最大の数
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16
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+
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17
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+
```output
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18
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1 = 1
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19
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+
1+2 = 3
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20
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+
1+2+3 = 6
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21
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+
1+2+3+4 = 10
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22
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+
1+2+3+4+5 = 15
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23
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1+2+3+4+5+6 = 21
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24
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+
1+2+3+4+5+6+7 = 28
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25
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1+2+3+4+5+6+7+8 = 36
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26
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+
1+2+3+4+5+6+7+8+9 = 45
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27
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+
1+2+3+4+5+6+7+8+9+10 = 55
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28
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+
1+2+3+4+5+6+7+8+9+10+11 = 66
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29
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+
1+2+3+4+5+6+7+8+9+10+11+12 = 78
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30
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+
1+2+3+4+5+6+7+8+9+10+11+12+13 = 91
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31
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14 = 105
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32
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1+2+3+4+5+6+7+8+9+10+11+12+13+14+15 = 120
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33
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16 = 136
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34
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17 = 153
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35
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18 = 171
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36
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19 = 190
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37
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20 = 210
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38
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21 = 231
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39
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22 = 253
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40
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23 = 276
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41
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24 = 300
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42
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25 = 325
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43
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26 = 351
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44
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27 = 378
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45
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28 = 406
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46
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29 = 435
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47
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30 = 465
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48
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31 = 496
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49
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+
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32 = 528
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9
50
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```
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3
d
answer
CHANGED
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@@ -2,8 +2,8 @@
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2
2
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s = 0 # 累積和
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3
3
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i = 1 # 初期値
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4
4
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while s + i < 500:
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5
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+
s += i
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5
6
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i += 1
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6
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-
s += i
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7
7
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8
8
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print(s, i) # 495 31
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9
9
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```
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2
d
answer
CHANGED
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@@ -1,11 +1,9 @@
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1
1
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```python
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2
2
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s = 0 # 累積和
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3
3
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i = 1 # 初期値
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4
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-
while True:
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5
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-
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4
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+
while s + i < 500:
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6
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-
break
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7
5
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i += 1
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8
6
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s += i
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9
7
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10
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-
print(s, i) # 495
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8
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+
print(s, i) # 495 31
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11
9
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```
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1
e
answer
CHANGED
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@@ -2,9 +2,9 @@
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2
2
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s = 0 # 累積和
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3
3
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i = 1 # 初期値
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4
4
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while True:
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5
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-
i += 1
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6
5
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if s + i >= 500:
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7
6
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break
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7
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+
i += 1
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8
8
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s += i
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9
9
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10
10
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print(s, i) # 495 32
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