#include <bits/stdc++.h> using namespace std; inline long long Read() { register long long x=0,f=0; register char t=getchar(); while(t<'0'||t>'9')f^=(t=='-'),t=getchar(); while(t>='0'&&t<='9')x=(x<<3)+(x<<1)+(t^48),t=getchar(); return f?-x:x; } int main() { printf("NO\n"); return 0; }