Compilare: main.cpp: In function 'long long int solve(std::vector<long long int>)': main.cpp:23:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i=0; i<poz[p].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp:36:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for(int i=0; i<poz[p^1].size(); i++) { | ~^~~~~~~~~~~~~~~~ main.cpp:51:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for(int i=0; i<poz[p].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp:56:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for(int i=0; i<poz[p^1].size(); i++) | ~^~~~~~~~~~~~~~~~ main.cpp:10:7: warning: unused variable 'n' [-Wunused-variable] 10 | int n=v.size(); | ^