Compilare: main.cpp: In function 'int main()': main.cpp:106:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 106 | for(int j = 0; j < v[i - d].size(); j++) | ~~^~~~~~~~~~~~~~~~~ main.cpp:110:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 110 | for(int j = 0; j < nodes[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~ main.cpp:117:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 117 | for(int j = 0; j < nodes[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~