PAT BASIC 1040. 有几个PAT(25)
啊啊啊,很简单的题目,本来不打算保存这种等级的题目,但是自我感觉这道题的代码真是写得很简洁啊
传送门http://www.patest.cn/contests/pat-b-practise/1040
1 #include<iostream> 2 #include<string> 3 using namespace std; 4 int P; 5 int PA; 6 int PAT; 7 int main() 8 { 9 string str; 10 P = PA = PAT = 0; 11 cin>>str; 12 for(auto c : str) 13 { 14 switch(c) 15 { 16 case 'P':P++;break; 17 case 'A':PA = (PA + P)%1000000007;break; 18 case 'T':PAT = (PAT + PA)%1000000007;break; 19 default:break; 20 } 21 } 22 cout<<PAT<<endl; 23 return 0; 24 }