Compilare: main.cpp: In function 'void afis(int, int)': main.cpp:63:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<sol[nod].size(); i++){ ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:71:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("poligon7.in", "r", stdin); ^ main.cpp:72:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("poligon7.out", "w", stdout); ^ main.cpp:74:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &cer, &t); ^ main.cpp:76:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:78:44: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &v[i].x, &v[i].y); ^