Compilare: main.cpp: In function 'void solve()': main.cpp:40:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:43:45: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &p[i].first, &p[i].second); ^ main.cpp: In function 'int main()': main.cpp:7:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] #define FO(x) {freopen(#x".in","r",stdin);freopen(#x".out","w",stdout);} ^ main.cpp:109:5: note: in expansion of macro 'FO' FO(poligon7); ^~ main.cpp:7:71: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] #define FO(x) {freopen(#x".in","r",stdin);freopen(#x".out","w",stdout);} ^ main.cpp:109:5: note: in expansion of macro 'FO' FO(poligon7); ^~ main.cpp:113:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &o); ^ main.cpp:115:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^