回答編集履歴
1
scanfの書式設定の誤りの修正
test
CHANGED
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@@ -6,7 +6,7 @@
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6
6
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7
7
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int x, y;
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8
8
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9
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-
while(scanf("
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9
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+
while(scanf("%d %d", &x, &y)==2){
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10
10
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11
11
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printf("%d\n", (x+y)*(y-x+1)/2);
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12
12
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