Problem 2272 Frog
Accept: 17 Submit: 23
Time Limit: 1000 mSec Memory Limit : 262144 KB
Problem Description
Therearex frogs and y chicken in a garden. Kim found there are n heads and m legs in the garden. Please tell Kim how many frogs and chicken are there. (A frog has 4 legs, and a chicken has 2 legs.)
Input
First line contains an integer T (1 ≤ T ≤ 10), represents there are T test cases.
For each test case: Two number n and m.
1<=n, m <=100000. The data is legal.
Output
For each test case, output two numbers A and B – the number of frog and the number of chicken.
Sample Input
22 62 4
Sample Output
1 10 2
Source
第八届福建省大学生程序设计竞赛-重现赛(感谢承办方厦门理工学院)
题解
签到题
#include<stdio.h>
#include<iostream>
#include<algorithm>
#include<string.h>
#include<math.h>
using namespace std;
int main()
{
int t;
int n,m,x,y;
scanf("%d",&t);
while(t--)
{
scanf("%d%d",&n,&m);
for(int i=0;i<=n;i++)
{
x=i;
y=n-i;
if(x*4+2*y==m)
{
printf("%d %d\n",x,y);
break;
}
}
}
}