Submission #891290


Source Code Expand

#include <cstdio>

int ls[299999];
int main() {
	int N;
	scanf("%d",&N);
	int ret=0;
	for(int i=1;i<=N;i++) scanf("%d",&ls[i]);
	for(int i=1;i<=N;i++) if(ls[ls[i]]==i) ret++;
	printf("%d\n",ret/2);
	return 0;
}

Submission Info

Submission Time
Task B - Friendly Rabbits
User phidnight
Language C++14 (GCC 5.4.1)
Score 200
Code Size 223 Byte
Status AC
Exec Time 11 ms
Memory 512 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:6:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&N);
                ^
./Main.cpp:8:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=N;i++) scanf("%d",&ls[i]);
                                          ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 200 / 200
Status
AC × 3
AC × 15
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 1 ms 128 KB
0_02.txt AC 1 ms 128 KB
1_00.txt AC 1 ms 128 KB
1_01.txt AC 11 ms 512 KB
1_02.txt AC 11 ms 512 KB
1_03.txt AC 11 ms 512 KB
1_04.txt AC 11 ms 512 KB
1_05.txt AC 11 ms 512 KB
1_06.txt AC 11 ms 512 KB
1_07.txt AC 11 ms 512 KB
1_08.txt AC 5 ms 256 KB
1_09.txt AC 9 ms 512 KB
1_10.txt AC 8 ms 384 KB
1_11.txt AC 3 ms 256 KB