Compilare: user.cpp: In function ‘int main()’: user.cpp:81:41: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘std::multiset<int>::size_type {aka long unsigned int}’ [-Wformat=] printf("%d " , Set[i].count(Min)); ^ user.cpp:71:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dmin.in", "r" , stdin); ^ user.cpp:72:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dmin.out","w", stdout); ^ user.cpp: In function ‘void ScanData()’: user.cpp:28:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N , &M); ^ user.cpp:33:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &a,&b,&c); ^