Compilare: main.cpp: In function 'int main()': main.cpp:109:35: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::set<std::pair<double, int> >::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n",s.size()); ^ main.cpp:138:31: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::set<std::pair<double, int> >::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n",s.size()); ^ main.cpp:42:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("terenuri.in","r",stdin); ^ main.cpp:43:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("terenuri.out","w",stdout); ^ main.cpp:45:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ main.cpp:54:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lf %lf", &x[i], &y[i]); ^ main.cpp:97:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lf %lf",&x[i], &y[i]); ^