Compilare: main.cpp: In function 'int main()': main.cpp:50:26: warning: spurious trailing '%' in format [-Wformat=] scanf("%d%d%", &c, &n); ^ main.cpp:48:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rover.in", "r", stdin); ^ main.cpp:49:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rover.out", "w", stdout); ^ main.cpp:50:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%", &c, &n); ^ main.cpp:51:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] if(c == 1) scanf("%d", &g); ^ main.cpp:54:81: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(int j = 1; j <= n; ++j) scanf("%d", &a[i][j]), mx = max(mx, a[i][j]); ^