fork download
copy 
  1. #include <bits/stdc++.h>
  2. #define X first
  3. #define Y second
  4. #define ll long long
  5. #define pii pair<int, int>
  6. #define all(x) (x).begin(), (x).end()
  7. #define piii pair<int, pii>
  8. #define tp tuple<int,int,int>
  9. #define oo (ll) 1e18
  10. #define LOG_MAX 18
  11. using namespace std;
  12. #define MAXN 10000010
  13. #define MOD  1000000007
  14. #define base 311
  15. int n,prime[MAXN],cnt[MAXN],valid[MAXN];
  16. vector<int>cprime;
  17. void sieve(){
  18.     for(int i=2;i<=1e7;i++){
  19.         if(prime[i]) continue;
  20.         prime[i] = i;
  21.         cprime.push_back(i);
  22.         for(int j=2*i;j<=1e7;j+=i) prime[j] = i;
  23.     }
  24. }
  25. ll power(int a,int n){
  26.     if(n == 0) return 1;
  27.     if(n == 1) return a;
  28.     ll tmp = power(a , n / 2);
  29.     if(n % 2 == 0) return ((tmp * tmp) % MOD );
  30.     return ((tmp * tmp) % MOD * a) % MOD;
  31. }
  32. signed main(){
  33.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  34.     //freopen("barnpainting.inp","r",stdin);
  35.     //freopen("barnpainting.out","w",stdout);
  36.     cin >> n;
  37.     sieve();
  38.     for(int i=1;i<=n;i++){
  39.         int m; cin>>m;
  40.         unordered_map<int,int>mp;
  41.         for(int i=1;i<=m;i++){
  42.             int x; cin>>x;
  43.             while(x != 1){
  44.                 mp[prime[x]]++;
  45.                 x/=prime[x];
  46.             }
  47.         }
  48.         for(auto [primes , sz] : mp){
  49.             if(i == 1) cnt[primes] = sz;
  50.             else cnt[primes] = min(cnt[primes],sz);
  51.             valid[primes]++;
  52.         }
  53.     }
  54.     ll ans = 1;
  55.     for(auto c : cprime){
  56.         if(valid[c] != n) cnt[c] = 0;
  57.         ans = (ans * power(c,cnt[c])) % MOD;
  58.     }
  59.     cout << ans ;
  60.     return 0;
  61. }
  62. /*
  63. 4 2
  64. 1 2 3 4
  65.  
  66. */
  67.  
Success #stdin #stdout 0.23s 47424KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
1
https://ideone.com/tRk96e
language:
C++14 (gcc 8.3)
created:
14 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!