HDU 2648 Shopping (map与迭代器)

xiaoxiao2021-02-28  114

very girl likes shopping,so does dandelion.Now she finds the shop is increasing the price every day because the Spring Festival is coming .She is fond of a shop which is called "memory". Now she wants to know the rank of this shop's price after the change of everyday. Input One line contians a number n ( n<=10000),stands for the number of shops.  Then n lines ,each line contains a string (the length is short than 31 and only contains lowercase letters and capital letters.)stands for the name of the shop.  Then a line contians a number m (1<=m<=50),stands for the days .  Then m parts , every parts contians n lines , each line contians a number s and a string p ,stands for this day ,the shop p 's price has increased s.  Output Contains m lines ,In the ith line print a number of the shop "memory" 's rank after the ith day. We define the rank as :If there are t shops' price is higher than the "memory" , than its rank is t+1. Sample Input 3 memory kfc wind 2 49 memory 49 kfc 48 wind 80 kfc 85 wind 83 memory Sample Output 1 2

#include <iostream> #include <map> #include <string> using namespace std; map<string,int>str; int main() { int n,m,me,s,ans; string name; while(cin>>n) { me=0; str.clear(); for(int i=0;i<n;i++) cin>>name; //此处输入并无任何实际意义 cin>>m; while(m--) { for(int i=0;i<n;i++){ cin>>s>>name; if(name=="memory") me+=s; else str[name]+=s;//string的特性,元素名可以为字符串 } ans=1; for(map<string,int >::iterator iter=str.begin();iter!=str.end();iter++) //迭代器的使用 { if(iter->second>me) ans++; } cout << ans << endl; } } return 0; }

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