제출 #104250

#제출 시각아이디문제언어결과실행 시간메모리
104250tincamateiBitaro the Brave (JOI19_ho_t1)C++14
100 / 100
373 ms159096 KiB
#include <bits/stdc++.h> using namespace std; const int MAX_N = 3000; char getch(FILE *fin) { char ch = fgetc(fin); while(!isalpha(ch)) ch = fgetc(fin); return ch; } char matr[1+MAX_N+1][1+MAX_N+1]; long long sp[2][1+MAX_N+1][1+MAX_N+1]; int main() { #ifdef HOME FILE *fin = fopen("input.in", "r"); FILE *fout = fopen("output.out", "w"); #else FILE *fin = stdin; FILE *fout = stdout; #endif int n, m; long long rez = 0LL; fscanf(fin, "%d%d", &n, &m); for(int i = 1; i <= n; ++i) for(int j = 1; j <= m; ++j) matr[i][j] = getch(fin); for(int i = 1; i <= n; ++i) for(int j = m; j > 0; --j) { sp[0][i][j] += sp[0][i][j + 1]; sp[1][i][j] += sp[1][i - 1][j]; switch(matr[i][j]) { case 'J': sp[1][i][j] += sp[0][i][j]; break; case 'O': sp[0][i][j]++; break; case 'I': rez += sp[1][i][j]; break; } } fprintf(fout, "%lld", rez); fclose(fin); fclose(fout); return 0; }

컴파일 시 표준 에러 (stderr) 메시지

joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:29:8: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  fscanf(fin, "%d%d", &n, &m);
  ~~~~~~^~~~~~~~~~~~~~~~~~~~~
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