Compilare: main.cpp: In function 'int main()': main.cpp:103:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 103 | for(int i = 0; i < ctc.size(); i++){ | ~~^~~~~~~~~~~~ main.cpp:111:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 111 | for(int i = 0; i < v.size(); i++){ | ~~^~~~~~~~~~ main.cpp:155:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 155 | for(int i = 0; i < ciclu.size() - 1; i++){ | ~~^~~~~~~~~~~~~~~~~~ main.cpp:154:22: warning: unused variable 'pot' [-Wunused-variable] 154 | bool pot = 1; | ^~~ main.cpp:170:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 170 | for(int i = 0; i < ciclu.size() - 1; i++) out << ciclu[i] << " "; | ~~^~~~~~~~~~~~~~~~~~