文件比较程序-优快云博客

So easy

Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 991 Accepted Submission(s): 547

Problem Description

Small W gets two files. There are n integers in each file. Small W wants to know whether these two files are same. So he invites you to write a program to check whether these two files are same. Small W thinks that two files are same when they have the same integer set.
For example file A contains (5,3,7,7),and file B contains (7,5,3,3). They have the same integer set (3,5,7), so they are same.
Another sample file C contains(2,5,2,5), and file D contains (2,5,2,3).
The integer set of C is (2,5),but the integer set of D is (2,3,5),so they are not same.
Now you are expected to write a program to compare two files with size of n.

Input

Multi test cases (about 100). Each case contain three lines. The first line contains one integer n represents the size of file. The second line contains n integers

Output

For each case, output "YES" (without quote) if these two files are same, otherwise output "NO" (without quote).

Sample Input

1 1 2

1 2 2

5 3 7 7

7 5 3 3

2 5 2 3

2 5 2 5

1 2 3

1 2 4

Sample Output

YES

水题……

 1 //2016.8.12
 2 #include<iostream>
 3 #include<cstdio>
 4 #include<set>
 5 
 6 using namespace std;
 7 
 8 int main()
 9 {
10     int n;
11     while(cin>>n)
12     {
13         set<int> seta;
14         set<int> setb;
15         int a, b;
16         bool fg = true;
17         for(int i = 0; i < n; i++)
18         {
19             scanf("%d", &a);
20             seta.insert(a);
21         }
22         for(int i = 0; i < n; i++)
23         {
24             scanf("%d", &b);
25             setb.insert(b);
26         }
27         if(seta.size()!=setb.size())
28           fg = false;
29         else{
30             set<int>::iterator it;
31             for(it = seta.begin(); it != seta.end(); it++)
32             {
33                 if(setb.count(*it)==0)
34                   fg = false;
35             }
36         }
37         if(fg)cout<<"YES"<<endl;
38         else cout<<"NO"<<endl;
39     }
40 
41     return 0;
42 }