Compilare: main.cpp: In function 'int main()': main.cpp:63:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | for (int j = 0; j < v[i].size(); j++) { | ~~^~~~~~~~~~~~~ main.cpp:69:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | for (int j = 0; j < v[i - k].size(); j++) { | ~~^~~~~~~~~~~~~~~~~ main.cpp:78:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for (int j = 0; j < v[i].size(); j++) { | ~~^~~~~~~~~~~~~