#include <string>
#include <iostream>
using namespace std;

bool solution(string s)
{
    bool answer = true;
    int pCnt = 0;
	int sCnt = 0;
    
    if( false == ( s.length() <= 50) ) answer = false;
    
    for(int i = 0; i < s.length(); ++i)
	{
		if( 'p' == s[i] || 'P' == s[i] ) pCnt++;
		else if( 'y' == s[i] || 'Y' == s[i]) sCnt++;
	}
    
    if( pCnt == sCnt ) answer = true;
    else answer = false;
    
    return answer;
}

 

 

 

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