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  1. #include<bits/stdc++.h>
  2.  
  3. #define ll long long
  4. #define pp push_back
  5. #define endl '\n'
  6. #define all(x) x.begin(),x.end()
  7. #define ld long double
  8. #define PI acos(-1)
  9. #define ones(x) __builtin_popcountll(x)
  10. //#define int ll
  11.  
  12. using namespace std;
  13.  
  14. void Drakon() {
  15.     ios_base::sync_with_stdio(false);
  16.     cin.tie(nullptr);
  17.     cout.tie(nullptr);
  18. #ifdef Clion
  19.     freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout);
  20. #endif
  21. }
  22.  
  23. unsigned long long inf = 1e10;
  24. const double EPS = 1e-6;
  25. const int MOD = 1000000007, N = 1e5 + 5, LOG = 25;
  26.  
  27. ll mul(const ll &a, const ll &b) {
  28.     return (a % MOD + MOD) * (b % MOD + MOD) % MOD;
  29. }
  30.  
  31. ll add(const ll &a, const ll &b) {
  32.     return (a + b + 2 * MOD) % MOD;
  33. }
  34.  
  35. ll pw(ll x, ll y) {
  36.     ll ret = 1;
  37.     while (y > 0) {
  38.         if (y % 2 == 0) {
  39.             x = mul(x, x);
  40.             y = y / 2;
  41.         } else {
  42.             ret = mul(ret, x);
  43.             y = y - 1;
  44.         }
  45.     }
  46.     return ret;
  47. }
  48.  
  49. vector<int> den = {1, 6, 11, 21, 47};
  50. ll dp[6][N];
  51.  
  52. ll slv(int i, int rem) {
  53.     if(i == den.size()) return rem == 0;
  54.     ll &ret = dp[i][rem];
  55.     if(~ret)
  56.         return ret;
  57.     ret = slv(i + 1, rem);
  58.     if(den[i] <= rem) ret += slv(i, rem - den[i]);
  59.     return ret;
  60. }
  61.  
  62. void solve() {
  63.     int n;
  64.     cin >> n;
  65.     memset(dp, -1, sizeof dp);
  66.     cout << slv(0, n);
  67. }
  68.  
  69. signed main() {
  70.     Drakon();
  71.     int t = 1;
  72.     //cin >> t;
  73.     while (t--) {
  74.         solve();
  75.     }
  76. }
Success #stdin #stdout 0.01s 9284KB
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152303289738
https://ideone.com/J7Ztac
language:
C++14 (gcc 8.3)
created:
4 days ago
visibility:
public

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