Need Help in ANGTRICH - DSA learning series practice contest

Could someone help me about the approach, I have tried all possible ways but it gives wrong answer. Any suggestion?

Try to share the problem link whenever you post a doubt .

Regarding the problem you just have to check if the three angles sum up to 180 and each of them is non-zero.

#include "bits/stdc++.h"
using namespace std ;
int main(){
	int a,b,c;
	cin>>a>>b>>c ;
	cout <<(a+b+c==180&&a&&b&&c?"YES":"NO") ;
}

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Thanks buddy for helping with this approach. : )