Submission #424626

#	Time	Username	Problem	Language	Result	Execution time	Memory
424626		aris12345678	A Huge Tower (CEOI10_tower)	C++14	30 / 100	142 ms	8744 KiB

tower

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

const int mxN = 1000005;
const int mod = 1e9+9;
int blocks[mxN];

int main() {
    int n, d;
    scanf("%d %d", &n, &d);
    for(int i = 0; i < n; i++)
        scanf("%d", &blocks[i]);
    sort(blocks, blocks+n);
    int i = 0, j = 0, ans = 1;
    while(i < n) {
        while(j < n-1 && blocks[j+1]-d <= blocks[i])
            j++;
        ans = (ans*(j-i+1))%mod;
        i++;
    }
    printf("%d\n", ans);
    return 0;
}

Compilation message (stderr)

tower.cpp: In function 'int main()':
tower.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     scanf("%d %d", &n, &d);
      |     ~~~~~^~~~~~~~~~~~~~~~~
tower.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |         scanf("%d", &blocks[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~

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