Yahoo Programming Contest 2019

A - Anti-Adjacency

签.

 1 #include <bits/stdc++.h>
 2 using namespace std;
 3 
 4 int main()
 5 {
 6     int n, k;
 7     while (scanf("%d%d", &n, &k) != EOF)
 8     {
 9         int remind = (n + 1) / 2;
10         puts(k <= remind ? "YES" : "NO");
11     }
12     return 0;
13 }

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