Compilare: main.cpp: In function 'void solve(int*, int*, int*)': main.cpp:44:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for (int i = 0; i < values.size(); i++) { | ~~^~~~~~~~~~~~~~~ main.cpp:58:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for (int i = 0; i + 1 < values.size(); i++) { | ~~~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'void solve2(int*, int*, int*)': main.cpp:124:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 124 | for (int i = 0; i < values.size(); i++) { | ~~^~~~~~~~~~~~~~~ main.cpp:142:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 142 | for (int i = 0; i + 1 < values.size(); i++) { | ~~~~~~^~~~~~~~~~~~~~~