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  1. #include<stdio.h>
  2. int S[121212], ck[121212];
  3. int main() {
  4. 	int n, m, k, i;
  5. 	scanf("%d%d%d", &n, &k, &m);
  6. 	for (i = 0; i < m; i++) { int x; scanf("%d", &x), ck[x] = 1; }
  7. 	int ans = 1e9;
  8. 	for (i = 1; i <= n; i++) {
  9. 		S[i] = S[i - 1] + ck[i];
  10. 		if (i >= k)if (ans>S[i] - S[i - k])ans = S[i] - S[i - k];
  11. 	}
  12. 	printf("%d", ans);
  13. 	return 0;
  14. }
Success #stdin #stdout 0s 4336KB
comments (?)
stdin 
10 6 5
2
10
1
5
9
stdout 
1
https://ideone.com/79jw08
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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