Compilare: main.cpp: In function 'int main()': main.cpp:74:47: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | if(comp[x]==comp[y])for(int j=1; j<v[comp[x]].size(); j++)if(v[comp[x]][j]==x&&v[comp[x]][j-1]==y||v[comp[x]][j]==y&&v[comp[x]][j-1]==x) | ~^~~~~~~~~~~~~~~~~~ main.cpp:74:90: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 74 | if(comp[x]==comp[y])for(int j=1; j<v[comp[x]].size(); j++)if(v[comp[x]][j]==x&&v[comp[x]][j-1]==y||v[comp[x]][j]==y&&v[comp[x]][j-1]==x) main.cpp:92:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 92 | for(int j=0;j<v[comp[x]].size();j++)if(v[comp[x]][j]==x){p=j;break;} | ~^~~~~~~~~~~~~~~~~~ main.cpp:96:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | if(p1<v[comp[x]].size())sol.push_back(v[comp[x]][p1]); | ~~^~~~~~~~~~~~~~~~~~ main.cpp:98:49: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 98 | else if(sol.size()==1||sol.size()==2&&sol[1]==sol[0])fout<<1<<" "<<sol[0];