Compilare: main.cpp: In function 'int main()': main.cpp:102:18: 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] 102 | for(int i=0;i<ceva.size();i++){ | ~^~~~~~~~~~~~ main.cpp:116:18: 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] 116 | for(int i=0;i<ceva.size();i++){ | ~^~~~~~~~~~~~ main.cpp:130:18: 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] 130 | for(int i=0;i<ceva.size();i++){ | ~^~~~~~~~~~~~ main.cpp:96:26: warning: 'nod' may be used uninitialized [-Wmaybe-uninitialized] 96 | for(auto it:L[nod]){ | ^ main.cpp:80:22: note: 'nod' was declared here 80 | int minn=1e9;int nod; | ^~~