Submission #1085314

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Source Code Expand

#include<cstdio>
#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<set>
#include<list>
#include<map>
#include<unordered_map>
#include<unordered_set>
using namespace std;

int a[128];
signed main() {
	a['B'] = 2;
	a['A'] = 1;
	a['D'] = 1;
	a['O'] = 1;
	a['P'] = 1;
	a['Q'] = 1;
	a['R'] = 1;
	string b; cin >> b;
	if (a[b[0]] == 0 && a[b[1]] == 0 && a[b[2]] == 1 && a[b[3]] == 0)puts("yes");
	else puts("no");
}

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