Compilare: main.cpp: In function 'void dfs1(int)': main.cpp:12:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | for(int q=0;q<a[p].size();q++) | ~^~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:20:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(int q=0;q<b[p].size();q++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:43:1: warning: this 'if' clause does not guard... [-Wmisleading-indentation] 43 | if(v2[j]==1&&v1[j]==1) | ^~ main.cpp:45:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if' 45 | for(j=1;j<=n;j++) | ^~~