Compilare: main.cpp: In function 'int main()': main.cpp:70:28: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 70 | if(apcm.size() == n - 1) | ~~~~~~~~~~~~^~~~~~~~ main.cpp:52:5: warning: 'i' may be used uninitialized [-Wmaybe-uninitialized] 52 | for(int i; i < m; i++) { | ^~~ main.cpp:52:13: note: 'i' was declared here 52 | for(int i; i < m; i++) { | ^