Compilare: main.cpp: In function 'void go(int, int)': main.cpp:50:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for (int i = 0; i < v.size(); i++) { | ~~^~~~~~~~~~ main.cpp:51:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for (int j = i + 1; j < v.size(); j++) { | ~~^~~~~~~~~~