Compilare: main.cpp: In function 'int main()': main.cpp:19:29: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::map<int, int>::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n", mp.size()) ; ^ main.cpp:9:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("concurs2.in", "r", stdin) ; ^ main.cpp:10:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("concurs2.out", "w", stdout) ; ^ main.cpp:13:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &p) ; ^ main.cpp:15:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &judet, &id) ; ^