Compilare: main.cpp: In function 'std::vector<std::pair<long long int, long long int> > ic(std::vector<std::pair<long long int, long long int> >, int)': main.cpp:32:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(int i = 2; i < p.size(); i++) { | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:57:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(int i = 0, j = 0; i + 1 < ls.size(); i++) { | ~~~~~~^~~~~~~~~~~ main.cpp:58:48: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(; id(ls[i], ls[i + 1], lj[j]) && j < lj.size(); ++j); | ~~^~~~~~~~~~~ main.cpp:60:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | if(j == lj.size()) { | ~~^~~~~~~~~~~~ main.cpp:66:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | for(int i = 0; i + 1 < lj.size(); i++) | ~~~~~~^~~~~~~~~~~