Compilare: main.cpp: In function 'int main()': main.cpp:123:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%i %i",&n,&m); ^ main.cpp:127:79: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%i %i %i",&a,&b,&c),a--,b--,graf[a].pb({b,c}),graf[b].pb({a,c}); ^ main.cpp:129:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%i",&a),a--,q[a].pb(i); ^