patcode/1003.cpp at master · ninisy/patcode · GitHub

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

bool judge(string str){
	int len=str.length();
	if(len<=2)
		return false;
	bool book[3]={false};
	for(int i=0;i<len;i++){
		if(str[i]=='P')
			book[0]=true;
		else if(str[i]=='A')
			book[1]=true;
		else if(str[i]=='T')
			book[2]=true;
		else
			return false;
		if(str[i]=='P'){
			for(int j = 0;j<i;j++){
				if(str[j]!='A')
					return false;
			}
			if(str[i+1]!='A')
				return false;
			for(int k=i+2;k<len;k++){
				if(str[k]!='A'){
					if(str[k]!='T')
						return false;
					if((len-k-1)!=((k-1-i)*i))
						return false;
					for(int m=k+1;m<len;m++){
						if(str[m]!='A')
							return false;
					}
				}

			}
		}
	}
	if(book[0]==false||book[1]==false||book[2]==false)
		return false;
	return true;

}

int main(){
	int n;
	cin >> n;
	string s;
	for(int i=0;i<n;i++){
		cin>>s;
		if(judge(s)==true)
			cout<<"YES"<<endl;
		else
			cout <<"NO"<<endl;
	}
	system("pause");
	return 0;
}