Compilare: main.cpp: In function 'int main()': main.cpp:43:31: warning: narrowing conversion of 'c' from 'int' to 'long double' inside { } [-Wnarrowing] ad[a].push_back({b, c}); ^ main.cpp:44:31: warning: narrowing conversion of 'c' from 'int' to 'long double' inside { } [-Wnarrowing] ad[b].push_back({a, c}); ^ main.cpp:37:35: 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); ^ main.cpp:38:37: 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); ^ main.cpp:40:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &m); ^ main.cpp:42:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d\n", &a, &b, &c); ^