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  1. #include <bits/stdc++.h>
  2. #define up(i,a,b) for (int i = (int)a; i <= (int)b; i++)
  3. #define down(i,a,b) for (int i = (int)a; i >= (int)b; i--)
  4. #define f first
  5. #define s second
  6. using namespace std;
  7.  
  8. const int MAX = INT_MAX-2;
  9. const vector<pair<int, double> > bac_6 =
  10. {
  11.     {0,     1.728},
  12.     {50,    1.786},
  13.     {100,   2.074},
  14.     {200,   2.612},
  15.     {300,   2.919},
  16.     {400,   3.015},
  17.     {MAX,   3.015}
  18. };
  19.  
  20. const vector<pair<int, double> > bac_5 =
  21. {
  22.     {0,     1.728},
  23.     {100,   2.074},
  24.     {200,   2.612},
  25.     {400,   3.111},
  26.     {700,   3.457},
  27.     {MAX,   3.457}
  28. };
  29.  
  30.  
  31. double calc(const vector<pair<int, double> > muc_gia, int so_dien){
  32.     double sum = 0;
  33.     for (int i = 1; i < (int)muc_gia.size(); i++){
  34.         if (so_dien > muc_gia[i].f){
  35.             sum += 1.0 * (muc_gia[i].f - muc_gia[i-1].f) * muc_gia[i-1].s;
  36.         }
  37.         else{
  38.             int rem = so_dien - muc_gia[i-1].f;
  39.             sum += 1.0 * rem * muc_gia[i-1].s;
  40.             break;
  41.         }
  42. //        cout << sum << "\n";
  43.     }
  44. //    cout << "\n";
  45.     return sum;
  46. }
  47.  
  48. signed main(){
  49.     ios_base::sync_with_stdio(false);
  50.     cin.tie(0);
  51.     #define Task "A"
  52.     if (fopen(Task".inp", "r")){
  53.         freopen(Task".inp", "r", stdin);
  54.         freopen(Task".out", "w", stdout);
  55.     }
  56.  
  57.     int so_dien;
  58.     cin >> so_dien;
  59.     double giabac6 = calc(bac_6, so_dien);
  60.     double giabac5 = calc(bac_5, so_dien);
  61.     double chenh_lech = giabac5 - giabac6;
  62.     double ket_qua = chenh_lech*1000 + chenh_lech*100;
  63.     cout << fixed << setprecision(2);
  64.     cout << ket_qua;
  65. //    cout << giabac5 << " " << giabac6 << " " << chenh_lech;
  66. //    cout << "\n";
  67.  
  68. }
  69.  
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/VLDkOG
language:
C++14 (gcc 8.3)
created:
5 days ago
visibility:
public

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