CodeForces 2A - Winner（模拟）

题目链接：http://codeforces.com/problemset/problem/2/A

A. Winner

time limit per test

1 second

memory limit per test

64 megabytes

input

standard input

output

standard output

The winner of the card game popular in Berland "Berlogging" is determined according to the following rules. If at the end of the game there is only one player with the maximum number of points, he is the winner. The situation becomes more difficult if the number
of such players is more than one. During each round a player gains or loses a particular number of points. In the course of the game the number of points is registered in the line "name
score", where name is a player's name, and score is
the number of points gained in this round, which is an integer number. If score is negative, this means that the player has lost in the round. So, if two or more players have the maximum number of points (say, it equals to m)
at the end of the game, than wins the one of them who scored at least m points first. Initially
each player has 0 points. It's guaranteed that at the end of the game at least one player has a positive number of points.

Input

The first line contains an integer number n (1  ≤  n  ≤  1000), n is
the number of rounds played. Then follow n lines, containing the information about the rounds in "name
score" format in chronological order, where name is a string of lower-case Latin letters with the length from 1 to 32, and score is
an integer number between -1000 and 1000, inclusive.

Output

Print the name of the winner.

Sample test(s)

input

3
mike 3
andrew 5
mike 2

output

andrew

input

3
andrew 3
andrew 2
mike 5

output

andrew

题意：

给出一些列的名字和分数！正的表示加分。负的表示减分！

求终于分数最大的人的名字。

假设分数最大的人有多个。输出最先达到最大分数的人。

代码例如以下：

#include <cstdio>
#include <iostream>
#include <map>
using namespace std;
map<string, int> a,b;
string s[1017];

int main()
{
    int x[1017];
    int n;
    cin >> n;
    for(int i = 1; i <= n; i++)
    {
        cin >> s[i] >> x[i];
        a[s[i]]+=x[i];
    }
    int maxx = 0;
    for(int i = 1; i <= n; i++)
    {
        if(a[s[i]] > maxx)
            maxx = a[s[i]];
    }

    for(int i = 1; i <= n; i++)
    {
        b[s[i]]+=x[i];
        if((b[s[i]]>=maxx) && (a[s[i]]>=maxx))//在终于分数是最大的人中，选首先达到最大分数的人
        {
            cout << s[i];
            break;
        }
    }
    return 0;
}