Submission #1986581
Source Code Expand
#include <bits/stdc++.h> using namespace std; static const int64_t INFL = 0x3F3F3F3F3F3F3F3FLL; typedef int64_t ll; typedef vector<ll> vll; struct Solution { void solve(std::istream& in, std::ostream& out) { ll n; in >> n; vll a(n, INFL); ll ans = 0; for (int i = 0; i < n; i++) { ll t; in >> t; if (a[t - 1] == i) { ans++; } a[i] = t - 1; } out << ans << '\n'; } }; void solve(std::istream& in, std::ostream& out) { out << std::setprecision(12); Solution solution; solution.solve(in, out); } #include <fstream> #include <iostream> int main() { ios_base::sync_with_stdio(0); cin.tie(0); istream& in = cin; ostream& out = cout; solve(in, out); return 0; }
Submission Info
Submission Time | |
---|---|
Task | B - Friendly Rabbits |
User | masakt |
Language | C++14 (GCC 5.4.1) |
Score | 200 |
Code Size | 868 Byte |
Status | AC |
Exec Time | 9 ms |
Memory | 1024 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 200 / 200 | ||||
Status |
|
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Set Name | Test Cases |
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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 | 1 ms | 256 KB |
0_01.txt | AC | 1 ms | 256 KB |
0_02.txt | AC | 1 ms | 256 KB |
1_00.txt | AC | 1 ms | 256 KB |
1_01.txt | AC | 9 ms | 1024 KB |
1_02.txt | AC | 9 ms | 1024 KB |
1_03.txt | AC | 9 ms | 1024 KB |
1_04.txt | AC | 9 ms | 1024 KB |
1_05.txt | AC | 9 ms | 1024 KB |
1_06.txt | AC | 9 ms | 1024 KB |
1_07.txt | AC | 9 ms | 1024 KB |
1_08.txt | AC | 4 ms | 512 KB |
1_09.txt | AC | 8 ms | 896 KB |
1_10.txt | AC | 7 ms | 768 KB |
1_11.txt | AC | 2 ms | 384 KB |