oj.uz

Submission #331871

# Submission time Handle Problem Language Result Execution time Memory
331871 2020-11-30T14:48:42 Z vitkishloh228 Divide and conquer (IZhO14_divide) C++14
100 / 100
 233 ms 20144 KB 
#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
#define int long long
vector<int> t;
int getmin(int v, int tl, int tr, int l, int r) {
    if (tl > tr || l > r) return 1e15;
    if (tl == l && tr == r) return t[v];
    int tm = (tl + tr) >> 1;
    return min(getmin(2 * v, tl, tm, l, min(r, tm)), getmin(2 * v + 1, tm + 1, tr, max(l, tm + 1), r));
}
void upd(int v, int tl, int tr, int x, int pos) {
    if (tl == tr) {
        t[v] = min(t[v], x);
        return;
    }
    int tm = (tl + tr) >> 1;
    if (pos <= tm) {
        upd(2 * v, tl, tm, x, pos);
    }
    else upd(2 * v + 1, tm + 1, tr, x, pos);
    t[v] = min(t[2 * v], t[2 * v + 1]);
}
int32_t main() {
    
    int n;
    cin >> n;
    vector<vector<int>> a;
    for (int i = 0; i < n; ++i) {
        int x, g, e;
        cin >> x >> g >> e;
        a.push_back({ x,g,e });
    }
    vector<int> pr(n + 1);
    for (int i = 0; i < n; ++i) {
        pr[i + 1] = pr[i] + a[i][2];
    }
    vector<int> pr_gold(n + 1);
    for (int i = 0; i < n; ++i) {
        pr_gold[i + 1] = pr_gold[i] + a[i][1];
    }
    vector<int> coord;
    for (int i = 0; i < n; ++i) {
        coord.push_back(pr[i] - a[i][0]);
        coord.push_back(pr[i + 1] - a[i][0]);
    }
    sort(coord.begin(), coord.end());
    coord.erase(unique(coord.begin(), coord.end()), coord.end());
    int N = coord.size();
    t.resize(4 * N, 1e15);
    int ans = 0;
    for (int i = 0; i < n; ++i) {
        if (i == 0) {
            ans = max(ans, a[i][1]);
            int pos = lower_bound(coord.begin(), coord.end(), pr[i] - a[i][0]) - coord.begin();
            upd(1, 0, N - 1, pr_gold[i], pos);
        }
        else {
            int pos = lower_bound(coord.begin(), coord.end(), pr[i + 1] - a[i][0]) - coord.begin();
            int x = getmin(1, 0, N - 1, 0, pos);
            ans = max(ans, pr_gold[i + 1] - x);
            ans = max(ans, a[i][1]);
            pos = lower_bound(coord.begin(), coord.end(), pr[i] - a[i][0]) - coord.begin();
            upd(1, 0, N - 1, pr_gold[i], pos);
        }
    }
    cout << ans;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 364 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 2 ms 492 KB Output is correct
16 Correct 2 ms 640 KB Output is correct
17 Correct 2 ms 492 KB Output is correct
18 Correct 3 ms 620 KB Output is correct
19 Correct 2 ms 492 KB Output is correct
20 Correct 2 ms 492 KB Output is correct
21 Correct 3 ms 620 KB Output is correct
22 Correct 3 ms 620 KB Output is correct
23 Correct 9 ms 1260 KB Output is correct
24 Correct 9 ms 1536 KB Output is correct

Subtask #3
52.0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 2 ms 492 KB Output is correct
16 Correct 2 ms 640 KB Output is correct
17 Correct 2 ms 492 KB Output is correct
18 Correct 3 ms 620 KB Output is correct
19 Correct 2 ms 492 KB Output is correct
20 Correct 2 ms 492 KB Output is correct
21 Correct 3 ms 620 KB Output is correct
22 Correct 3 ms 620 KB Output is correct
23 Correct 9 ms 1260 KB Output is correct
24 Correct 9 ms 1536 KB Output is correct
25 Correct 7 ms 1280 KB Output is correct
26 Correct 14 ms 2236 KB Output is correct
27 Correct 16 ms 2216 KB Output is correct
28 Correct 85 ms 9760 KB Output is correct
29 Correct 109 ms 10144 KB Output is correct
30 Correct 233 ms 20144 KB Output is correct
31 Correct 174 ms 18984 KB Output is correct
32 Correct 166 ms 19100 KB Output is correct
33 Correct 162 ms 18844 KB Output is correct
34 Correct 162 ms 18716 KB Output is correct
35 Correct 185 ms 19356 KB Output is correct
36 Correct 183 ms 19672 KB Output is correct