#include <bits/stdc++.h> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; if(a1 && b1 && c==1){ cout<<"Yes"; }else{ cout<<"No"; } return 0; }

这道题很简单，只要全部为1即可

INCLUDE <IOSTREAM> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; if(a&&b&&c) cout<<"Yes"; else cout<<"No"; return 0; }