Compilare: main.cpp:21:19: warning: overflow in implicit constant conversion [-Woverflow] const int oo = 5e9+10; ~~~^~~ main.cpp: In function 'int main()': main.cpp:59:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d",&nodes, &edges); ^ main.cpp:62:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &from, &to, &distance); ^