Submission #1560677


Source Code Expand

#include <cstdio>
#include <algorithm>

using namespace std;

int main() {
  int n, cons = 0, ans = 0;
  scanf("%d", &n);
  for (int i = 1; i <= n; ++i) {
    int x;
    scanf("%d", &x);
    if (x == i)
      cons++;
    else
      ans += (cons + 1) / 2, cons = 0;
  }
  printf("%d\n", ans + (cons + 1) / 2);

  return 0;
}

Submission Info

Submission Time
Task D - Derangement
User MiricaMatei
Language C++14 (GCC 5.4.1)
Score 400
Code Size 344 Byte
Status AC
Exec Time 10 ms
Memory 128 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:8:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
                  ^
./Main.cpp:11:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &x);
                    ^

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 9 ms 128 KB
1_008.txt AC 9 ms 128 KB
1_009.txt AC 9 ms 128 KB
1_010.txt AC 9 ms 128 KB
1_011.txt AC 9 ms 128 KB
1_012.txt AC 9 ms 128 KB
1_013.txt AC 10 ms 128 KB
1_014.txt AC 9 ms 128 KB