Compilare: main.cpp: In function 'int main()': main.cpp:35:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define MIN(a, b) (((a) < (b)) ? (a) : (b)) ~~~~^~~~~ main.cpp:58:24: note: in expansion of macro 'MIN' for(j = 0; j < MIN(v[i].size(), g / i); j++){ ^~~ main.cpp:58:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < MIN(v[i].size(), g / i); j++){ ^ main.cpp:47:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ruksak.in","r",stdin); ^ main.cpp:48:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ruksak.out","w",stdout); ^ main.cpp:50:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &g); ^ main.cpp:52:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^