Compilare: main.cpp: In function 'int main()': main.cpp:47:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bool>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int j = 0; j < op.size(); j++) | ~~^~~~~~~~~~~ main.cpp:77:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bool>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for(int i = startk; i < k.size(); i++) | ~~^~~~~~~~~~ main.cpp:89:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bool>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for(int i = t+1; i < op.size(); i++) | ~~^~~~~~~~~~~ main.cpp:111:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bool>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 111 | for(int i = t+1; i < op.size(); i++) | ~~^~~~~~~~~~~ main.cpp:125:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bool>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 125 | for(int i = t+1; i < op.size(); i++) | ~~^~~~~~~~~~~