제출 #444128

#제출 시각아이디문제언어결과실행 시간메모리
444128nonsensenonsense1Bitaro the Brave (JOI19_ho_t1)C++17
100 / 100
142 ms88292 KiB
#include <cstdio> const int N = 3001; int h, w, o[N][N], in[N][N]; char s[N][N]; int main() { scanf("%d%d", &h, &w); for (int i = 0; i < h; ++i) scanf("%s", s[i]); long long ans = 0; for (int i = h - 1; i >= 0; --i) { for (int j = w - 1; j >= 0; --j) { o[i][j] = o[i][j + 1] + (s[i][j] == 'O'); in[i][j] = in[i + 1][j] + (s[i][j] == 'I'); if (s[i][j] == 'J') ans += o[i][j] * in[i][j]; } } printf("%lld\n", ans); return 0; }

컴파일 시 표준 에러 (stderr) 메시지

joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:9:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |  scanf("%d%d", &h, &w);
      |  ~~~~~^~~~~~~~~~~~~~~~
joi2019_ho_t1.cpp:10:35: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |  for (int i = 0; i < h; ++i) scanf("%s", s[i]);
      |                              ~~~~~^~~~~~~~~~~~
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