Submission #891781
Source Code Expand
#include <iostream> #define REP(i, a, n) for(int i = a; i < n; i++) using namespace std; int N, a[100001], cnt; int main(void) { cin >> N; REP(i, 1, N + 1) { cin >> a[i]; } cnt = 0; REP(i, 1, N + 1) { if(a[a[i]] == i) cnt++; } cout << cnt / 2 << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | B - Friendly Rabbits |
User | kshinya |
Language | C++14 (GCC 5.4.1) |
Score | 200 |
Code Size | 316 Byte |
Status | AC |
Exec Time | 35 ms |
Memory | 640 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 200 / 200 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | 0_00.txt, 0_01.txt, 0_02.txt |
All | 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_00.txt | AC | 3 ms | 256 KB |
0_01.txt | AC | 3 ms | 256 KB |
0_02.txt | AC | 2 ms | 256 KB |
1_00.txt | AC | 3 ms | 256 KB |
1_01.txt | AC | 35 ms | 640 KB |
1_02.txt | AC | 35 ms | 640 KB |
1_03.txt | AC | 35 ms | 640 KB |
1_04.txt | AC | 35 ms | 640 KB |
1_05.txt | AC | 35 ms | 640 KB |
1_06.txt | AC | 35 ms | 640 KB |
1_07.txt | AC | 35 ms | 640 KB |
1_08.txt | AC | 14 ms | 384 KB |
1_09.txt | AC | 29 ms | 512 KB |
1_10.txt | AC | 25 ms | 512 KB |
1_11.txt | AC | 8 ms | 256 KB |