1074: You are my brother

题目描述

h2 { margin-top: 0.05cm; margin-bottom: 0.05cm; color: rgb(0, 0, 0); line-height: 0.78cm; page-break-inside: avoid; }h2.western { font-family: "Times New Roman",serif; font-size: 14pt; }h2.cjk { font-family: "宋体","SimSun"; font-size: 14pt; font-style: normal; }h2.ctl { font-family: "Calibri",sans-serif; font-size: 16pt; }p { margin-bottom: 0.21cm; }
Little A gets to know a new friend, Little B, recently. One day, they realize that they are family 500 years ago. Now, Little A wants to know whether Little B is his elder, younger or brother.

输入

p { margin-bottom: 0.21cm; }
There are multiple test cases.
For each test case, the first line has a single integer, n (n<=1000). The next n lines have two integers a and b (1<=a,b<=2000) each, indicating b is the father of a. One person has exactly one father, of course. Little A is numbered 1 and Little B is numbered 2.
Proceed to the end of file.

输出

h2 { margin-top: 0.05cm; margin-bottom: 0.05cm; color: rgb(0, 0, 0); line-height: 0.78cm; page-break-inside: avoid; }h2.western { font-family: "Times New Roman",serif; font-size: 14pt; }h2.cjk { font-family: "宋体","SimSun"; font-size: 14pt; font-style: normal; }h2.ctl { font-family: "Calibri",sans-serif; font-size: 16pt; }p { margin-bottom: 0.21cm; }
For each test case, if Little B is Little A’s younger, print “You are my younger”. Otherwise, if Little B is Little A’s elder, print “You are my elder”. Otherwise, print “You are my brother”. The output for each test case occupied exactly one line.

样例输入

5
1 3
2 4
3 5
4 6
5 6
6
1 3
2 4
3 5
4 6
5 7
6 7

样例输出

You are my elder
You are my brother

参考代码

#include<stdio.h>
int main() 
{
    int x,y,m,n,i,a,b,g;
    while(~scanf("%d",&g)) 
    {
        x=1;
        y=2;
        m=n=0;
        for (i=0;i<g;i++) 
        {
            scanf("%d%d",&a,&b);
            if(a==x) 
            {
                m++;
                x=b;
            }
            if(a==y) 
            {
                n++;
                y=b;
            }
        }
        if(m>n)printf("You are my eldern");
    else if(m==n)printf("You are my brothern");
    else printf("You are my youngern");
    }
    return 0;
}

解析

暂无