Compilare: main.cpp: In function 'void dfs(long long int, long long int)': main.cpp:22:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(i=0;i<adj[curr].size();i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(long long int, long long int)': main.cpp:107:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 107 | for(i=0;i<qu[curr].size();i++) | ~^~~~~~~~~~~~~~~~ main.cpp:113:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 113 | for(i=0;i<resturi.size();i++) | ~^~~~~~~~~~~~~~~ main.cpp:118:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 118 | for(i=0;i<adj[curr].size();i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:133:17: warning: unused variable 'j' [-Wunused-variable] 133 | long long i,j,k,l,m,a,b,w,cuc,x; | ^ main.cpp:133:19: warning: unused variable 'k' [-Wunused-variable] 133 | long long i,j,k,l,m,a,b,w,cuc,x; | ^ main.cpp:133:21: warning: unused variable 'l' [-Wunused-variable] 133 | long long i,j,k,l,m,a,b,w,cuc,x; | ^ main.cpp:133:31: warning: unused variable 'cuc' [-Wunused-variable] 133 | long long i,j,k,l,m,a,b,w,cuc,x; | ^~~