Codeforces Beta Round #58

はい。
http://codeforces.com/contest/62

A. A Student's Dream

ざっくりと大意

・A poor studentな男の子と金星の女の子の指がうまく絡むか？？
・If B < G they will be happy only when B = G - 1, you may see a pattern GBGBGBG...GBGBG. In this pattern you can add no girl's finger for save the condition in statement
・If B > G the worst but correct situation for them is a pattern BBGBBGBB...BBGBB. As you may see this way must be satisfy 2G + 2 >  = B condition
・Simple situation is B = G, obviously answer is "yes" ・女の子の指が多い場合は1本ずつ、男の子の指が多い場合は男の子は2本ずつ毎でもよい？？

方針のようなもの

#!/usr/bin/env python
# -*- coding: UTF-8 -*-
import time
import sys, io
import re, math
#start = time.clock()
#n=int(raw_input())
l=[int(x) for x in raw_input().split()]
m=[int(x) for x in raw_input().split()]
def ans(a,b):
    return (b-1)/2<=a and a-1<=b
print 'YES' if ans(l[0],m[1]) or ans(l[1],m[0]) else 'NO'

自力ではtest38でWAだったので302517の-dp-さんをパクりました。。