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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define fi first
  4. #define se second
  5.  
  6. typedef long long ll;
  7. typedef pair<int, int> pii;
  8.  
  9. template <class X, class Y> bool mini(X& x, const Y& y) {
  10.     if(x > y){ x = y; return 1; }
  11.     return 0;
  12. }
  13.  
  14. template <class X, class Y> bool maxi(X& x, const Y& y) {
  15.     if(x < y){ x = y; return 1; }
  16.     return 0;
  17. }
  18.  
  19. const short N = 105;
  20.  
  21. short n, q = 3;
  22. pii a[N], qe[5];
  23.  
  24. namespace sub1
  25. {
  26.     bool check()
  27.     {
  28.         return n <= 25;
  29.     }
  30.  
  31.     const int SZ = 34e6;
  32.  
  33.     ll MXR = 0;
  34.     int cnt[5], div[SZ], cntd = 0;
  35.     void dq(short pos, int cur)
  36.     {
  37.         if(pos > n){
  38.             div[++cntd] = cur;
  39.             return ;
  40.         }
  41.  
  42.         ll t = 1;
  43.         for(int i = 0; i <= a[pos].se; ++i){
  44.             if(cur * t > MXR) return ;
  45.  
  46.             dq(pos + 1, cur * t);
  47.             t *= a[pos].fi;
  48.         }
  49.     }
  50.     void run()
  51.     {
  52.         for(int i = 1; i <= q; ++i)
  53.             maxi(MXR, qe[i].se);
  54.  
  55.         dq(1, 1);
  56.         sort(div + 1, div + 1 + cntd);
  57.  
  58.         for(int i = 1; i <= q; ++i){
  59.             int l = qe[i].fi, r = qe[i].se;
  60.             auto L = lower_bound(div + 1, div + 1 + cntd, l);
  61.             auto R = upper_bound(div + 1, div + 1 + cntd, r);
  62.             cout << R - L << "\n";
  63.         }
  64.     }
  65. }
  66.  
  67. namespace sub2
  68. {
  69.     void run()
  70.     {
  71.  
  72.     }
  73. }
  74.  
  75. int main()
  76. {
  77.     ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
  78.     #define file "UOCSO"
  79.     if(fopen(file".inp", "r")){
  80.         freopen(file".inp", "r", stdin);
  81.         freopen(file".out", "w", stdout);
  82.     }
  83.  
  84.     cin >> n;
  85.     for(int i = 1; i <= n; ++i){
  86.         cin >> a[i].fi >> a[i].se;
  87.         mini(a[i].se, 29);
  88.     }
  89.     for(int i = 1; i <= q; ++i){
  90.         cin >> qe[i].fi >> qe[i].se;
  91.     }
  92.  
  93. //    sub2::run();
  94.  
  95.     if(sub1::check()) sub1::run();
  96.     else sub2::run();
  97.  
  98.     return 0;
  99. }
  100.  
Success #stdin #stdout 0.01s 5292KB
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https://ideone.com/CgUXdU
language:
C++14 (gcc 8.3)
created:
16 days ago
visibility:
public

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