제출 #335617

#제출 시각아이디문제언어결과실행 시간메모리
335617JoshcBitaro the Brave (JOI19_ho_t1)C++11
100 / 100
905 ms88704 KiB
#include <cstdio> using namespace std; char c[3002][3002]; int a[3002][3002], b[3002][3002]; int main() { int h, w; long long ans = 0; scanf("%d%d", &h, &w); for (int i=1; i<=h; i++) { for (int j=1; j<=w; j++) scanf(" %c", &c[i][j]); for (int j=w; j>0; j--) a[i][j] = a[i][j+1]+(c[i][j]=='O'); } for (int j=1; j<=w; j++) { for (int i=h; i>0; i--) { b[i][j] = b[i+1][j]+(c[i][j]=='I'); ans += (c[i][j]=='J')*a[i][j]*b[i][j]; } } printf("%lld\n", ans); }

컴파일 시 표준 에러 (stderr) 메시지

joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   10 |     scanf("%d%d", &h, &w);
      |     ~~~~~^~~~~~~~~~~~~~~~
joi2019_ho_t1.cpp:12:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   12 |         for (int j=1; j<=w; j++) scanf(" %c", &c[i][j]);
      |                                  ~~~~~^~~~~~~~~~~~~~~~~
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