Submission #1559400


Source Code Expand

#include<cstdio>
using namespace std;
int main(){
   int n,ans=0;
   scanf("%d",&n);
   bool f=false;
   for(int i=1;i<=n;++i){
      int tmp;
      scanf("%d",&tmp);
      if(tmp==i){
         if(f){++ans; f=false;}
         else f=true;
      }
      else if(f){++ans; f=false;}
   }
   if(f) ++ans;
   printf("%d\n",ans);
   return 0;
}

Submission Info

Submission Time
Task D - Derangement
User Anonymity
Language C++14 (GCC 5.4.1)
Score 400
Code Size 357 Byte
Status AC
Exec Time 10 ms
Memory 128 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:5:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d",&n);
                  ^
./Main.cpp:9:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
       scanf("%d",&tmp);
                       ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 400 / 400
Status
AC × 4
AC × 15
Set Name Test Cases
Sample 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt
All 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt
Case Name Status Exec Time Memory
0_000.txt AC 0 ms 128 KB
0_001.txt AC 0 ms 128 KB
0_002.txt AC 0 ms 128 KB
0_003.txt AC 0 ms 128 KB
1_004.txt AC 0 ms 128 KB
1_005.txt AC 9 ms 128 KB
1_006.txt AC 9 ms 128 KB
1_007.txt AC 10 ms 128 KB
1_008.txt AC 9 ms 128 KB
1_009.txt AC 9 ms 128 KB
1_010.txt AC 10 ms 128 KB
1_011.txt AC 9 ms 128 KB
1_012.txt AC 10 ms 128 KB
1_013.txt AC 10 ms 128 KB
1_014.txt AC 10 ms 128 KB