#include #include <math.h> #include #include <stdio.h> #include #include #include #include <string.h> #include using namespace std; #define LL long long const int N = 1e5 + 10; const int INF = 0x3f3f3f3f; int main() { int n; cin >> n; int b,s,g; b = n/100; s = n/10%10; g = n%10; if(bbb + ggg + sss ==n) { cout <<"YES"; } else { cout <<"NO"; } return 0; }