Compilare: main.cpp: In function 'void solv(int, int, bool)': main.cpp:42:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::stack<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | while(s1size != s[s1].size() && s2size != s[s2].size()) | ~~~~~~~^~~~~~~~~~~~~~~ main.cpp:42:44: warning: comparison of integer expressions of different signedness: 'int' and 'std::stack<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | while(s1size != s[s1].size() && s2size != s[s2].size()) | ~~~~~~~^~~~~~~~~~~~~~~ main.cpp:67:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::stack<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | while(s1size != s[s1].size()) | ~~~~~~~^~~~~~~~~~~~~~~ main.cpp:71:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::stack<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | while(s2size != s[s2].size()) | ~~~~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:89:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for(int i = 0; i < ans.size(); i++) | ~~^~~~~~~~~~~~