Compilare: main.cpp: In function 'int Floyd()': main.cpp:34:1: warning: no return statement in function returning non-void [-Wreturn-type] 34 | } | ^ main.cpp: In function 'void sol()': main.cpp:39:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int i=1;i<=v.size();i++) | ~^~~~~~~~~~ main.cpp: In function 'void back(int)': main.cpp:51:49: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 51 | if(a[f[k-1]][i]!=INF && a[f[k-1]][i]!=0 && !ff[i] || k==1) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~ main.cpp:54:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 54 | if(k==v.size()) | ~^~~~~~~~~~ main.cpp:56:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | else if(k<v.size()) | ~^~~~~~~~~