Submission #671609

#	Time	Username	Problem	Language	Result	Execution time	Memory
671609		vjudge1	A Huge Tower (CEOI10_tower)	C++11	100 / 100	137 ms	11192 KiB

tower

#include<iostream>
#include<algorithm>
using namespace std;
const long long maxn = 1000005;
const long long modv = (long long) 1e9+9;
long long n,d,ans = 1,arr[maxn];
int main () {
    scanf("%lld%lld",&n,&d);
    for(long long i = 0; i < n; i++) {
        scanf("%lld",&arr[i]);
    }
    sort(arr,arr+n);
    for(long long i = 0; i < n; i++) {
        long long prevP = lower_bound(arr,arr+n,arr[i]-d)-arr;
        ans = (ans*(i-prevP+1)%modv);
    }
    printf("%lld\n",ans);
    return 0;
}

Compilation message (stderr)

tower.cpp: In function 'int main()':
tower.cpp:8:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |     scanf("%lld%lld",&n,&d);
      |     ~~~~~^~~~~~~~~~~~~~~~~~
tower.cpp:10:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |         scanf("%lld",&arr[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 5 / 5
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• Subtask 10: 5 / 5
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• Subtask 15: 5 / 5
• Subtask 16: 5 / 5
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• Subtask 18: 5 / 5
• Subtask 19: 5 / 5
• Subtask 20: 5 / 5