Submission #7436067
Source Code Expand
#include<bits/stdc++.h> using namespace std; #define rep(i,n) for(int i=0;i<n;i++) typedef long long ll; int gcd(int a,int b){ if(!b) return a; return gcd(b,a%b); } int main(){ ll n,k,A[200001]; ll ans=0,x=0; cin>>n>>k; set<ll> B; map<ll,ll> C,D; rep(i,n) cin>>A[i],A[i]=gcd(k,A[i]),C[A[i]]++; for(int i=1;i<=sqrt(k);i++){ if(k%i==0) B.insert(i),B.insert(k/i); } for(auto i:B)for(auto j:B) if(i*j%k==0) D[i]+=C[j]; rep(i,n) ans+=D[A[i]]; rep(i,n) if(A[i]*A[i]%k==0) ans--; cout<<ans/2; }
Submission Info
Submission Time | |
---|---|
Task | C - ロト2 |
User | daiwakun |
Language | C++14 (GCC 5.4.1) |
Score | 400 |
Code Size | 569 Byte |
Status | AC |
Exec Time | 151 ms |
Memory | 2048 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 400 / 400 | ||||
Status |
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Set Name | Test Cases |
---|---|
Sample | 00_example_01.txt, 00_example_02.txt, 00_example_03.txt |
All | 00_example_01.txt, 00_example_02.txt, 00_example_03.txt, 10_random_01.txt, 10_random_02.txt, 10_random_03.txt, 10_random_04.txt, 10_random_05.txt, 20_max_01.txt, 20_max_02.txt, 20_max_03.txt, 20_max_04.txt, 20_max_05.txt, 30_overflow_01.txt, 30_overflow_02.txt, 40_dmax_01.txt, 40_dmax_02.txt, 40_dmax_03.txt, 50_prime_01.txt, 50_prime_02.txt, 50_prime_03.txt, 60_prime_pow_01.txt, 60_prime_pow_02.txt, 60_prime_pow_03.txt, 70_one_01.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
00_example_01.txt | AC | 1 ms | 256 KB |
00_example_02.txt | AC | 1 ms | 256 KB |
00_example_03.txt | AC | 1 ms | 256 KB |
10_random_01.txt | AC | 1 ms | 256 KB |
10_random_02.txt | AC | 1 ms | 256 KB |
10_random_03.txt | AC | 1 ms | 256 KB |
10_random_04.txt | AC | 1 ms | 256 KB |
10_random_05.txt | AC | 1 ms | 256 KB |
20_max_01.txt | AC | 76 ms | 1792 KB |
20_max_02.txt | AC | 70 ms | 1792 KB |
20_max_03.txt | AC | 88 ms | 1792 KB |
20_max_04.txt | AC | 72 ms | 1792 KB |
20_max_05.txt | AC | 99 ms | 1792 KB |
30_overflow_01.txt | AC | 66 ms | 1792 KB |
30_overflow_02.txt | AC | 66 ms | 1792 KB |
40_dmax_01.txt | AC | 150 ms | 2048 KB |
40_dmax_02.txt | AC | 150 ms | 2048 KB |
40_dmax_03.txt | AC | 151 ms | 2048 KB |
50_prime_01.txt | AC | 72 ms | 1792 KB |
50_prime_02.txt | AC | 79 ms | 1792 KB |
50_prime_03.txt | AC | 89 ms | 1792 KB |
60_prime_pow_01.txt | AC | 91 ms | 1792 KB |
60_prime_pow_02.txt | AC | 87 ms | 1792 KB |
60_prime_pow_03.txt | AC | 85 ms | 1792 KB |
70_one_01.txt | AC | 61 ms | 1792 KB |