Submission #789460

#	Time	Username	Problem	Language	Result	Execution time	Memory
789460		Trisanu_Das	Martian DNA (BOI18_dna)	C++17	Compilation error	0 ms	0 KiB

dna

#include <bits/stdc++.h>
using namespace std;

int x;

int main(){
  int n, k, cnt;
  int a[n + 1], b[n + 1], ccnt[n + 1]; memset(cnt, 0, sizeof(ccnt));
  for(int i = 1; i < n + 1; i++) cin >> a[i];
  for(int i = 1; i < cnt + 1; i++){
    cin >> x; cin >> b[x];
  }
  int l = 1, r = 0, ans = INT_MAX;
  while(r < n + 1){
    if(cnt){
      r++; ccnt[a[r]]++;
      if(ccnt[a[r]] == b[a[r]]) cnt--;
    }else{
      ans = min(ans, r - l + 1);
      if(ccnt[a[l]] == b[a[l]]) cnt++;
      ccnt[a[l]]--; l++;
    }
  }
  if(ans == INT_MAX) cout << "impossible\n";
  else cout << ans << '\n';
}

Compilation message (stderr)

dna.cpp: In function 'int main()':
dna.cpp:8:47: error: invalid conversion from 'int' to 'void*' [-fpermissive]
    8 |   int a[n + 1], b[n + 1], ccnt[n + 1]; memset(cnt, 0, sizeof(ccnt));
      |                                               ^~~
      |                                               |
      |                                               int
In file included from /usr/include/features.h:461,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/os_defines.h:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/c++config.h:518,
                 from /usr/include/c++/10/cassert:43,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from dna.cpp:1:
/usr/include/x86_64-linux-gnu/bits/string_fortified.h:59:1: note:   initializing argument 1 of 'void* memset(void*, int, size_t)'
   59 | __NTH (memset (void *__dest, int __ch, size_t __len))
      | ^~~~~
dna.cpp:7:10: warning: unused variable 'k' [-Wunused-variable]
    7 |   int n, k, cnt;
      |          ^