hdu 5655 CA Loves Stick

CA Loves Stick

Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)
Total Submission(s): 612 Accepted Submission(s): 214

Problem Description

CA loves to play with sticks.
One day he receives four pieces of sticks, he wants to know these sticks can spell a quadrilateral.
(What is quadrilateral? Click here: https://en.wikipedia.org/wiki/Quadrilateral)

Input

First line contains

Output

For each testcase, if these sticks can spell a quadrilateral, output "Yes"; otherwise, output "No" (without the quotation marks).

Sample Input

1 1 1 1

1 1 9 2

Sample Output

Yes

Source

BestCoder Round #78 (div.2)

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打BC的时候遇到的第一题，本来很简单的一道题，数据范围有点坑，错了三次，坑死宝宝了。

四边形定则：三边之后一定要大于第四边。

题意：给你四条边的长度，判断是否是个四边形，是则Yes，不是则No。注意数据的范围！！！

附上代码：

 1 #include <iostream>
 2 #include <cstdio>
 3 #include <cstring>
 4 #include <algorithm>
 5 using namespace std;
 6 int main()
 7 {
 8     __int64 a[5],m;
 9     int T,i,j;
10     scanf("%d",&T);
11     while(T--)
12     {
13         for(i=0; i<4; i++)
14             scanf("%I64d",&a[i]);
15         sort(a,a+4);
16         if(a[0]==0)
17         {
18             printf("No
");
19             continue;
20         }
21         m=a[3]-a[1]-a[2];
22         if(m>=a[0])
23             printf("No
");
24         else
25             printf("Yes
");
26     }
27     return 0;
28 }