Submission #968991

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Source Code Expand

#include<bits/stdc++.h>
#define int long long
#define rep(i,n)for(long long i=0;i<n;i++)
using namespace std;

int a[200000];
int b[200000];

int gcd(int a, int b) {
	if (!b)return a;
	return gcd(b, a%b);
}
signed main() {
	int n, k; scanf("%lld%lld", &n, &k);
	int d = 1;
	rep(i, n) {
		scanf("%lld", &a[i]);
		d = max(d, gcd(a[i], k));
	}
	int j = 0;
	rep(i, n) {
		if ((a[i] * 10000 * d) % k == 0)b[j++] = a[i];
	}
	int cnt = 0;
	rep(i, j) {
		for (long long t = i + 1; t < j; t++) {
			if ((i*j) % k == 0)cnt++;
		}
	}
	cout << cnt << endl;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:14:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  int n, k; scanf("%lld%lld", &n, &k);
                                     ^
./Main.cpp:17:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld", &a[i]);
                       ^

Judge Result