제출 #18996

#제출 시각아이디문제언어결과실행 시간메모리
18996kriii창문 (kriii4_C)C++14
3 / 100
0 ms1084 KiB
#include <stdio.h> int main() { int H,W; scanf ("%d %d",&H,&W); long long ans = 0; for (int i=1;i<=H;i++) for (int j=1;j<=W;j++){ ans += 9 * i * j * (H - i + 1) * (W - j + 1); } ans /= H * (H + 1) / 2; ans /= W * (W + 1) / 2; printf ("%lld\n",ans%1000000007); return 0; }
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