Submission #1378334
Source Code Expand
#include <iostream> using namespace std; #define skip continue typedef long long ll; const int N = 1e5 + 10; ll n; ll k, sum, a[N], d[N], cnt; int main(){ cin >> n; for(int i = 1; i <= n; ++ i){ cin >> a[i]; sum += a[i]; } k = sum / ((n + 1) * n / 2); if(k * (n + 1) * n / 2 != sum){ cout << "NO"; return 0; } d[n] = a[1] - a[n]; for(int i = 1; i < n; ++ i){ d[i] = a[i + 1] - a[i]; } for(int i = 1; i <= n; ++ i){ if((d[i] - k) % n != 0 || d[i] - k > 0){ cout << "NO"; return 0; } cnt += (d[i] - k) / n; } if(cnt == -k) cout << "YES"; else cout << "NO"; //cout << cnt << '\n'; return 0; }
Submission Info
Submission Time | |
---|---|
Task | B - Boxes |
User | KtlTheBest |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 669 Byte |
Status | AC |
Exec Time | 43 ms |
Memory | 1792 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 500 / 500 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | sample1.txt, sample2.txt, sample3.txt |
All | sample1.txt, sample2.txt, sample3.txt, in1.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in2.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in3.txt, in4.txt, in5.txt, in6.txt, in7.txt, in8.txt, in9.txt, sample1.txt, sample2.txt, sample3.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
in1.txt | AC | 35 ms | 1792 KB |
in10.txt | AC | 5 ms | 384 KB |
in11.txt | AC | 41 ms | 1792 KB |
in12.txt | AC | 41 ms | 1792 KB |
in13.txt | AC | 34 ms | 1536 KB |
in14.txt | AC | 1 ms | 256 KB |
in15.txt | AC | 1 ms | 256 KB |
in16.txt | AC | 1 ms | 256 KB |
in17.txt | AC | 1 ms | 256 KB |
in18.txt | AC | 1 ms | 256 KB |
in19.txt | AC | 1 ms | 256 KB |
in2.txt | AC | 43 ms | 1792 KB |
in20.txt | AC | 1 ms | 256 KB |
in21.txt | AC | 40 ms | 1024 KB |
in22.txt | AC | 40 ms | 1024 KB |
in23.txt | AC | 40 ms | 1024 KB |
in24.txt | AC | 3 ms | 384 KB |
in25.txt | AC | 5 ms | 384 KB |
in26.txt | AC | 40 ms | 1792 KB |
in27.txt | AC | 40 ms | 1792 KB |
in3.txt | AC | 43 ms | 1792 KB |
in4.txt | AC | 43 ms | 1792 KB |
in5.txt | AC | 43 ms | 1792 KB |
in6.txt | AC | 41 ms | 1024 KB |
in7.txt | AC | 41 ms | 1024 KB |
in8.txt | AC | 5 ms | 384 KB |
in9.txt | AC | 5 ms | 384 KB |
sample1.txt | AC | 1 ms | 256 KB |
sample2.txt | AC | 1 ms | 256 KB |
sample3.txt | AC | 1 ms | 256 KB |