Submission #71679813

Source Code Expand

#include<bits/stdc++.h>
using namespace std;bool Mbe;
namespace MAOJUN{

typedef long long ll;
const int N=3e5+5;
int n,a[N];bool v[N];

inline void main(){
	scanf("%d",&n);
	for(int i=1;i<=n;i++)scanf("%d",&a[i]);
	ll as=0;
	for(int i=1;i<=n;i++)if(!v[i]){
		int c=0;
		for(int j=i;!v[j];j=a[j]){v[j]=1;c++;}
		as+=c*(c-1ll)>>1;
	}
	printf("%lld\n",as);
}

}bool Med;int main(){
#ifdef IO
	freopen("3.in","r",stdin);
	freopen("data.out","w",stdout);
#endif
#ifdef TM
	atexit([](){fprintf(stderr,"%.0lfms\n%lfMB\n",clock()*1000./CLOCKS_PER_SEC,(&Mbe-&Med)/1024./1024);});
#endif
	MAOJUN::main();
	return 0;
}

Submission Info

Submission Time
Task E - Minimum Swap
User maojun
Language C++23 (GCC 15.2.0)
Score 475
Code Size 638 Byte
Status AC
Exec Time 22 ms
Memory 5372 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 475 / 475
Status
AC × 3
AC × 53
Set Name Test Cases
Sample 00_sample_00.txt, 00_sample_01.txt, 00_sample_02.txt
All 00_sample_00.txt, 00_sample_01.txt, 00_sample_02.txt, 01_random_03.txt, 01_random_04.txt, 01_random_05.txt, 01_random_06.txt, 01_random_07.txt, 01_random_08.txt, 01_random_09.txt, 01_random_10.txt, 01_random_11.txt, 01_random_12.txt, 01_random_13.txt, 01_random_14.txt, 01_random_15.txt, 01_random_16.txt, 01_random_17.txt, 01_random_18.txt, 01_random_19.txt, 01_random_20.txt, 01_random_21.txt, 01_random_22.txt, 01_random_23.txt, 01_random_24.txt, 01_random_25.txt, 01_random_26.txt, 01_random_27.txt, 01_random_28.txt, 01_random_29.txt, 01_random_30.txt, 01_random_31.txt, 01_random_32.txt, 01_random_33.txt, 01_random_34.txt, 01_random_35.txt, 01_random_36.txt, 01_random_37.txt, 01_random_38.txt, 01_random_39.txt, 01_random_40.txt, 01_random_41.txt, 01_random_42.txt, 01_random_43.txt, 01_random_44.txt, 01_random_45.txt, 01_random_46.txt, 01_random_47.txt, 01_random_48.txt, 01_random_49.txt, 01_random_50.txt, 01_random_51.txt, 01_random_52.txt
Case Name Status Exec Time Memory
00_sample_00.txt AC 1 ms 3768 KiB
00_sample_01.txt AC 1 ms 3696 KiB
00_sample_02.txt AC 1 ms 3836 KiB
01_random_03.txt AC 22 ms 5196 KiB
01_random_04.txt AC 21 ms 5304 KiB
01_random_05.txt AC 21 ms 5280 KiB
01_random_06.txt AC 22 ms 5304 KiB
01_random_07.txt AC 21 ms 5304 KiB
01_random_08.txt AC 20 ms 5184 KiB
01_random_09.txt AC 21 ms 5260 KiB
01_random_10.txt AC 21 ms 5212 KiB
01_random_11.txt AC 21 ms 5372 KiB
01_random_12.txt AC 21 ms 5276 KiB
01_random_13.txt AC 21 ms 5272 KiB
01_random_14.txt AC 21 ms 5184 KiB
01_random_15.txt AC 21 ms 5220 KiB
01_random_16.txt AC 12 ms 4592 KiB
01_random_17.txt AC 11 ms 4416 KiB
01_random_18.txt AC 3 ms 3776 KiB
01_random_19.txt AC 5 ms 4040 KiB
01_random_20.txt AC 21 ms 5304 KiB
01_random_21.txt AC 21 ms 5304 KiB
01_random_22.txt AC 20 ms 5180 KiB
01_random_23.txt AC 22 ms 5232 KiB
01_random_24.txt AC 20 ms 5304 KiB
01_random_25.txt AC 21 ms 5184 KiB
01_random_26.txt AC 21 ms 5248 KiB
01_random_27.txt AC 21 ms 5340 KiB
01_random_28.txt AC 21 ms 5232 KiB
01_random_29.txt AC 21 ms 5184 KiB
01_random_30.txt AC 20 ms 5216 KiB
01_random_31.txt AC 20 ms 5352 KiB
01_random_32.txt AC 21 ms 5184 KiB
01_random_33.txt AC 21 ms 5304 KiB
01_random_34.txt AC 21 ms 5216 KiB
01_random_35.txt AC 19 ms 5232 KiB
01_random_36.txt AC 18 ms 5248 KiB
01_random_37.txt AC 8 ms 4508 KiB
01_random_38.txt AC 11 ms 4604 KiB
01_random_39.txt AC 13 ms 4636 KiB
01_random_40.txt AC 20 ms 5104 KiB
01_random_41.txt AC 6 ms 4328 KiB
01_random_42.txt AC 8 ms 4320 KiB
01_random_43.txt AC 3 ms 3856 KiB
01_random_44.txt AC 10 ms 4416 KiB
01_random_45.txt AC 6 ms 4252 KiB
01_random_46.txt AC 16 ms 5248 KiB
01_random_47.txt AC 19 ms 5372 KiB
01_random_48.txt AC 20 ms 5232 KiB
01_random_49.txt AC 20 ms 5232 KiB
01_random_50.txt AC 16 ms 5136 KiB
01_random_51.txt AC 16 ms 5196 KiB
01_random_52.txt AC 16 ms 5220 KiB