Submission #3665548
Source Code Expand
#include<bits/stdc++.h>
using namespace std;
typedef long long lint;
typedef pair<int, int> P;
#define REP(i, x, n) for(lint i = x ; i < n ; ++i)
#define rep(i, n) REP(i, 0, n)
#define repr(i, n) for(lint i = n - 1 ; i >= 0 ; --i)
#define SORT(c) sort((c).begin(), (c).end())
const int IINF = 1e9 + 10;
const lint LLINF = (lint)1e18 + 10;
const lint MOD = (lint)1e9 + 7;
const int dx[] = {1, 0, -1, 0}, dy[] = {0, 1, 0, -1};
const int dx8[] = {1, 1, 0, -1, -1, -1, 0, 1}, dy8[] = {0, -1, -1, -1, 0, 1, 1, 1};
int main(){
int n;
cin >> n;
vector<lint> x(n);
rep(i, n){
cin >> x[i];
}
SORT(x);
lint ans = 0;
lint sum = n * (n - 1LL) / 2LL;
REP(i, 1, n){
lint t = abs(x[i] - x[i-1]);
lint v1 = i * (i - 1LL) / 2LL;
lint v2 = (n - i) * (n - i - 1LL) / 2LL;
ans += t * (sum - v1 - v2);
}
cout << ans << endl;
return 0;
}
Submission Info
Submission Time |
|
Task |
C - Pair Distance |
User |
mhrb |
Language |
C++14 (GCC 5.4.1) |
Score |
300 |
Code Size |
940 Byte |
Status |
AC |
Exec Time |
47 ms |
Memory |
1024 KB |
Judge Result
Set Name |
Sample |
All |
Score / Max Score |
0 / 0 |
300 / 300 |
Status |
|
|
Set Name |
Test Cases |
Sample |
s1.txt, s2.txt |
All |
01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, s1.txt, s2.txt |
Case Name |
Status |
Exec Time |
Memory |
01.txt |
AC |
2 ms |
256 KB |
02.txt |
AC |
2 ms |
256 KB |
03.txt |
AC |
3 ms |
256 KB |
04.txt |
AC |
2 ms |
256 KB |
05.txt |
AC |
2 ms |
256 KB |
06.txt |
AC |
4 ms |
256 KB |
07.txt |
AC |
4 ms |
256 KB |
08.txt |
AC |
4 ms |
256 KB |
09.txt |
AC |
4 ms |
256 KB |
10.txt |
AC |
4 ms |
256 KB |
11.txt |
AC |
44 ms |
896 KB |
12.txt |
AC |
46 ms |
1024 KB |
13.txt |
AC |
45 ms |
1024 KB |
14.txt |
AC |
43 ms |
896 KB |
15.txt |
AC |
44 ms |
1024 KB |
16.txt |
AC |
45 ms |
1024 KB |
17.txt |
AC |
47 ms |
1024 KB |
18.txt |
AC |
44 ms |
1024 KB |
19.txt |
AC |
45 ms |
1024 KB |
20.txt |
AC |
45 ms |
1024 KB |
21.txt |
AC |
44 ms |
1024 KB |
22.txt |
AC |
46 ms |
1024 KB |
23.txt |
AC |
47 ms |
1024 KB |
24.txt |
AC |
47 ms |
1024 KB |
25.txt |
AC |
45 ms |
1024 KB |
s1.txt |
AC |
2 ms |
256 KB |
s2.txt |
AC |
1 ms |
256 KB |