Submission #154818

#	Time	Username	Problem	Language	Result	Execution time	Memory
154818		arnold518	A Huge Tower (CEOI10_tower)	C++14	100 / 100	187 ms	8172 KiB

tower

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

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 1e6;
const ll MOD = 1e9+9;

int N, D;
int A[MAXN+10];
ll ans=1;

int main()
{
    int i, j;

    scanf("%d%d", &N, &D);
    for(i=1; i<=N; i++) scanf("%d", &A[i]);
    sort(A+1, A+N+1);

    for(i=1; i<=N; i++) ans*=A+i-lower_bound(A+1, A+i, A[i]-D)+1, ans%=MOD;
    printf("%lld", ans);
}

Compilation message (stderr)

tower.cpp: In function 'int main()':
tower.cpp:17:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j;
            ^
tower.cpp:19:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &N, &D);
     ~~~~~^~~~~~~~~~~~~~~~
tower.cpp:20:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=1; i<=N; i++) scanf("%d", &A[i]);
                         ~~~~~^~~~~~~~~~~~~

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