Compilare: main.cpp: In function 'long long int ret(long long int)': main.cpp:20:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(int i=0;i<m[poz].size();i++) | ~^~~~~~~~~~~~~~ main.cpp:30:1: warning: no return statement in function returning non-void [-Wreturn-type] 30 | } | ^ main.cpp: In function 'int main()': main.cpp:48:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for(i=0;i<m[c[p].p].size();i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'long long int ret(long long int)': main.cpp:17:5: warning: infinite recursion detected [-Winfinite-recursion] 17 | int ret(int poz) | ^~~ main.cpp:27:16: note: recursive call 27 | ret(m[poz][i]); | ~~~^~~~~~~~~~~