题解

#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,b,c=0,d;
    cin>>a;
    d=(a-2)*180;
    for(int i=1;i<=a;i++){
        cin>>b;
        c+=b;
        if(b>180){
            cout<<"No";
            return 0;
        }
    }
    if(c==d)cout<<"Yes";
    else cout<<"No";
    return 0;
}