oj.uz

Submission #382125

# Submission time Handle Problem Language Result Execution time Memory
382125 2021-03-26T12:39:18 Z mohamedsobhi777 Divide and conquer (IZhO14_divide) C++14
48 / 100
 1000 ms 2284 KB 
#include <bits/stdc++.h>

using namespace std;

#define vi vector<int>
#define vll vector<ll>
#define vii vector<pair<int, int>>
#define pii pair<int, int>
#define pll pair<ll, ll>
#define loop(_) for (int __ = 0; __ < (_); ++__)
#define pb push_back
#define f first
#define s second
#define sz(_) ((int)_.size())
#define all(_) _.begin(), _.end()
#define lb lower_bound
#define ub upper_bound

using ll = long long;
using ld = long double;

const int N = 1e5 + 7;
const ll mod = 1e9 + 7;

int n;
ll g[N], e[N];
ll x[N];

int main()
{
       ios_base::sync_with_stdio(0);
       cin.tie(0);
#ifndef ONLINE_JUDGE
#endif
       cin >> n;
       ll ans = 0;
       for (int i = 0; i < n; ++i)
       {
              cin >> x[i] >> g[i] >> e[i];
              ans = max(ans, g[i]);
       }
       for (int i = 1; i < n; ++i)
       {
              g[i] += g[i - 1];
              e[i] += e[i - 1];
       }

       vector<int> qu;

       qu.pb(0);

       auto get = [&](int a) -> int {
              return x[a] - (a ? e[a - 1] : 0);
       };
       for (int i = 1; i < n; ++i)
       {
              ll mv = get(i) - e[i] + e[i - 1];
              int my_cover = partition_point(all(qu), [&](int j) {
                                    return get(j) < mv;
                             }) -
                             qu.begin();
              if (my_cover < sz(qu))
              {
                     ans = max(ans, g[i] - (my_cover ? g[qu[my_cover - 1]] : 0));
              }
              if (get(i) > get(qu.back()))
              {
                     qu.push_back(i);
              }
       }
       ans = 0 ; 
       for(int i = 0 ;i < n;++ i){
              for(int j = i ; j< n; ++ j){
                     if(x[j] - x[i] <= e[j] - (i ? e[i - 1] : 0)){
                            ans = max(ans, g[j] - (i ? g[i - 1] : 0)) ;
                     }
              }
       }
       cout << ans;
       return 0;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 504 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 504 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 364 KB Output is correct
18 Correct 3 ms 364 KB Output is correct
19 Correct 2 ms 364 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 4 ms 364 KB Output is correct
22 Correct 5 ms 492 KB Output is correct
23 Correct 23 ms 620 KB Output is correct
24 Correct 22 ms 620 KB Output is correct

Subtask #3
0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 504 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 364 KB Output is correct
18 Correct 3 ms 364 KB Output is correct
19 Correct 2 ms 364 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 4 ms 364 KB Output is correct
22 Correct 5 ms 492 KB Output is correct
23 Correct 23 ms 620 KB Output is correct
24 Correct 22 ms 620 KB Output is correct
25 Correct 19 ms 492 KB Output is correct
26 Correct 70 ms 748 KB Output is correct
27 Correct 71 ms 832 KB Output is correct
28 Execution timed out 1052 ms 2284 KB Time limit exceeded
29 Halted 0 ms 0 KB -