Compilare: main.cpp:2:21: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 2 | using namespace std;main(){ifstream f("paritate.in");ofstream g("paritate.out");string a;int t=-1,o=1;vector<int>b;char c;while(f>>c){string s;int k=c-48,n=0;++t;for(int i=1;i<=7;++i){f>>c;if(c==49)++n;s+=c;}if((n&1)^k)o=0,b.push_back(t);bitset<7>bi(s);a+=(char)bi.to_ulong();}if(!o){g<<"NU\n";for(auto&x:b)g<<x<<' ';}else g<<"DA\n"<<a;} | ^~~~