Compilare: main.cpp: In function 'void vecin(int, int)': main.cpp:42:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for(i = 0; i < vecini[x].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:65:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for(j = 0; j < vecini[i].size(); ++j) | ~~^~~~~~~~~~~~~~~~~~