Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:16:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int i=0;i<v[k].size();i++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:61:1: warning: this 'if' clause does not guard... [-Wmisleading-indentation] 61 | if(x>y) | ^~ main.cpp:63:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if' 63 | diff=y-x+1; | ^~~~