Compilare: main.cpp: In function 'int main()': main.cpp:93:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 93 | while (i1 < sol1.size() and i2 < sol2.size()) | ~~~^~~~~~~~~~~~~ main.cpp:93:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 93 | while (i1 < sol1.size() and i2 < sol2.size()) | ~~~^~~~~~~~~~~~~ main.cpp:108:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 108 | while (i1 < sol1.size()) | ~~~^~~~~~~~~~~~~ main.cpp:114:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 114 | while (i2 < sol2.size()) | ~~~^~~~~~~~~~~~~