Compilare: main.cpp: In function 'int main()': main.cpp:69:9: warning: statement has no effect [-Wunused-value] 69 | for(i;i<v.size();i++) | ^ main.cpp:69:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | for(i;i<v.size();i++) | ~^~~~~~~~~