Compilare: main.cpp: In function 'int main()': main.cpp:57:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(l=0,j=mod; l<ciclu[i].size(); j=(j+1)%ciclu[i].size(),l++) ~^~~~~~~~~~~~~~~~ main.cpp:86:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(l=0,j=mod; l<ciclu[i].size(); j=(j+1)%ciclu[i].size(),l++) ~^~~~~~~~~~~~~~~~ main.cpp:25:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("hideandseek.in", "r", stdin); ^ main.cpp:26:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("hideandseek.out", "w", stdout); ^ main.cpp:30:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%lld%lld", &n, &x1, &y1); ^ main.cpp:35:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &perm[i]); ^ main.cpp:61:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &perm[i]); ^