Submission #1559179
Source Code Expand
#include <iostream> #include <algorithm> using namespace std; int N; int p[100010]; int main(){ cin.tie(0); ios::sync_with_stdio(false); cin >> N; for(int i = 0; i < N; ++i){ cin >> p[i]; } int cnt = 0; if(p[0] == 1){ cnt++; swap(p[0], p[1]); } for(int i = 1; i < N; ++i){ if(p[i] == i + 1){ ++cnt; if(p[i] != i + 2 && i != N - 1){ swap(p[i], p[i + 1]); } else{ swap(p[i], p[i - 1]); } } } cout << cnt << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | D - Derangement |
User | mds_boy |
Language | C++14 (GCC 5.4.1) |
Score | 400 |
Code Size | 639 Byte |
Status | AC |
Exec Time | 9 ms |
Memory | 640 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 400 / 400 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt |
All | 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_000.txt | AC | 1 ms | 256 KB |
0_001.txt | AC | 1 ms | 256 KB |
0_002.txt | AC | 1 ms | 256 KB |
0_003.txt | AC | 1 ms | 256 KB |
1_004.txt | AC | 1 ms | 256 KB |
1_005.txt | AC | 9 ms | 640 KB |
1_006.txt | AC | 9 ms | 640 KB |
1_007.txt | AC | 9 ms | 640 KB |
1_008.txt | AC | 9 ms | 640 KB |
1_009.txt | AC | 9 ms | 640 KB |
1_010.txt | AC | 9 ms | 640 KB |
1_011.txt | AC | 9 ms | 640 KB |
1_012.txt | AC | 9 ms | 640 KB |
1_013.txt | AC | 9 ms | 640 KB |
1_014.txt | AC | 9 ms | 640 KB |