CODE FESTIVAL 2016 qual A

Submission #1420894

Source codeソースコード

#include<string>
#include<deque>
#include<queue>
#include<vector>
#include<algorithm>
#include<iostream>
#include<set>
#include<cmath>
#include<tuple>
#include<chrono>
#include<functional>
#include<random>
#include<unordered_set>
using namespace std;
typedef long long int llint;
#define mp make_pair
#define mt make_tuple
#define pub push_back
#define puf push_front
#define pob pop_back
#define pof pop_front
#define fir first
#define sec second
#define res resize
#define ins insert
#define era erase
const llint mod=1000000007;
const llint big=1e9+10;
const long double pai=3.141592653589793238462643383279;
template <class T,class U>void mineq(T& a,U b){if(a>b){a=b;}}
template <class T,class U>void maxeq(T& a,U b){if(a<b){a=b;}}
llint gcd(llint a,llint b){if(b==0){return a;}return gcd(b,a%b);}//a>b
llint lcm(llint a,llint b){return (a/gcd(max(a,b),min(a,b)))*b;}
int main(void){
	int i,n,ans=0;cin>>n;
	vector<int>a;
	for(i=0;i<n;i++){cin>>a[i];a[i]--;}
	for(i=0;i<n;i++){if(i==a[a[i]]){ans++;}}
	ans/=2;
	cout<<ans<<endl;
	return 0;
}

Submission

Task問題 B - 仲良しうさぎ / Friendly Rabbits
User nameユーザ名 WA_TLE
Created time投稿日時
Language言語 C++14 (GCC 5.4.1)
Status状態 RE
Score得点 0
Source lengthソースコード長 1085 Byte
File nameファイル名
Exec time実行時間 ms
Memory usageメモリ使用量 -

Test case

Set

Set name Score得点 / Max score Cases
Sample - 0_00.txt,0_01.txt,0_02.txt
All 0 / 200 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

Test case

Case name Status状態 Exec time実行時間 Memory usageメモリ使用量
0_00.txt RE
0_01.txt RE
0_02.txt RE
1_00.txt RE
1_01.txt RE
1_02.txt RE
1_03.txt RE
1_04.txt RE
1_05.txt RE
1_06.txt RE
1_07.txt RE
1_08.txt RE
1_09.txt RE
1_10.txt RE
1_11.txt RE