Compilare: main.cpp: In function 'int main()': main.cpp:111:39: warning: format '%u' expects argument of type 'unsigned int', but argument 3 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=] printf("%d %u\n", Solu, Sol.size()); ^ main.cpp:89:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen(FIN, "r", stdin); ^ main.cpp:90:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen(FOUT, "w", stdout); ^ main.cpp:92:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ main.cpp:96:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &C[i][j]); ^