Submission #219867

#	Time	Username	Problem	Language	Result	Execution time	Memory
219867		mhy908	A Huge Tower (CEOI10_tower)	C++14	100 / 100	189 ms	8184 KiB

tower

#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
const LL MOD=1000000009;
int n, d, arr[1000010];
LL ans=1;
int main(){
	scanf("%d %d", &n, &d);
	for(int i=1; i<=n; i++)scanf("%d", &arr[i]);
	sort(arr+1, arr+n+1);
	for(int i=1; i<=n; i++){
        ans*=(LL)i-(lower_bound(arr+1, arr+n+1, arr[i]-d)-arr)+1;
        ans%=MOD;
	}
	printf("%lld", ans);
}

Compilation message (stderr)

tower.cpp: In function 'int main()':
tower.cpp:8:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &d);
  ~~~~~^~~~~~~~~~~~~~~~~
tower.cpp:9:30: 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", &arr[i]);
                         ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
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