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  1. #include <bits/stdc++.h>
  2. #define VuDucNam ios_base::sync_with_stdio(false);
  3. #define Lop9a6 cin.tie(NULL);
  4. #define THCSPhamVanDong cout.tie(NULL);
  5. #define ll long long
  6. #define el cout << '\n'
  7. #define sz(a) (ll)a.size()
  8. #define all(a) a.begin(),a.end()
  9. #define fi first
  10. #define se second
  11. #define fill(a,x) memset(a,x,sizeof(a))
  12. #define file(name)                       \
  13.     if(fopen(name ".INP","r"))           \
  14.     {                                    \
  15.         freopen(name ".INP","r",stdin);  \
  16.         freopen(name ".OUT","w",stdout); \
  17.     }
  18. #define TIME (1.0*clock()/CLOCKS_PER_SEC)
  19. #define RUNTIME cerr << "\nRuntime: " << TIME << "s.\n"
  20.  
  21. using namespace std;
  22.  
  23. const ll MOD = 1e9 + 7;
  24. const ll inf = LLONG_MAX;
  25.  
  26. struct dulieu {
  27.     int start;
  28.     int end;
  29.     int money;
  30. };
  31.  
  32. bool cmp(dulieu a, dulieu b) {
  33.     return a.end < b.end;
  34. }
  35.  
  36. int result(int n, dulieu f[]) {
  37.     sort(f+1, f+n+1, cmp);
  38.     int ans = 0;
  39.     int tmp = 0;
  40.     for (int i = 1; i <= n; ++i) {
  41.         if (f[i].start >= tmp) {
  42.             ans += f[i].money;
  43.             tmp = f[i].end;
  44.         }
  45.     }
  46.     return ans;
  47. }
  48. void solve()
  49. {
  50.     int n;
  51.     cin >> n;
  52.     dulieu f[n+5];
  53.     for (int i = 1; i <= n; ++i) {
  54.         cin >> f[i].start >> f[i].end >> f[i].money;
  55.     }
  56.     int ans = result(n, f);
  57.     cout << ans;
  58.     el;
  59. }
  60.  
  61. int main()
  62. {
  63.     VuDucNam Lop9a6 THCSPhamVanDong
  64.     file("TIENKS");
  65.     solve();
  66.     RUNTIME;
  67.     return 0;
  68. }
Success #stdin #stdout #stderr 0.01s 5272KB
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stdin
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3
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2 3 6
4 7 6
stdout
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20
stderr
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Runtime: 0.004874s.
https://ideone.com/gFtlP8
language:
C++ (gcc 8.3)
created:
8 days ago
visibility:
public

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