Compilare: main.cpp: In function 'void dijkstra()': main.cpp:49:64: warning: narrowing conversion of 'Min' from 'double' to 'int' inside { } [-Wnarrowing] if(!inq[i] && Min != 2000000000.0) pq.push({i, Min}); ^ main.cpp: In function 'int main()': main.cpp:55:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("retea.in", "r", stdin); ^ main.cpp:56:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("retea.out", "w", stdout); ^ main.cpp:58:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &n, &m, &k); ^ main.cpp:61:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &z); ^