oj.uz

Submission #491506

# Submission time Handle Problem Language Result Execution time Memory
491506 2021-12-02T18:23:01 Z Yazan_Alattar Divide and conquer (IZhO14_divide) C++14
48 / 100
 1000 ms 9572 KB 
#include <iostream>
#include <fstream>
#include <vector>
#include <cstring>
#include <algorithm>
#include <set>
#include <map>
#include <queue>
#include <list>
#include <utility>
#include <cmath>
#include <assert.h>
#include <numeric>
using namespace std;
typedef long long ll;
#define F first
#define S second
#define pb push_back
#define endl "\n"
#define all(x) x.begin(), x.end()
const int M = 100007;
const ll inf = 1e18;
const ll mod = 1e9 + 7;
const double pi = acos(-1);
const int dx[] = {1, 0, -1, 0}, dy[] = {0, 1, 0, -1};

ll n, x[M], g[M], d[M], seg[4 * M], lazy[4 * M], ans;

void push(int node, int l, int r)
{
    if(lazy[node] != 0){
        seg[node] += (r - l + 1) * lazy[node];
        if(l != r){
            lazy[2 * node] += lazy[node];
            lazy[2 * node + 1] += lazy[node];
        }
        lazy[node] = 0;
    }
    return;
}

void upd(int st, int en, ll v, int node = 1, int l = 1, int r = n)
{
    push(node, l, r);
    if(l > en || r < st) return;
    if(l >= st && r <= en){
        lazy[node] += v;
        push(node, l, r);
        return;
    }
    int mid = (l + r) / 2;
    upd(st, en, v, 2 * node, l, mid);
    upd(st, en, v, 2 * node + 1, mid + 1, r);
    seg[node] = max(seg[2 * node], seg[2 * node + 1]);
    return;
}

int get(int st, int en, int node = 1, int l = 1, int r = n)
{
    push(node, l, r);
    if(l > en || r < st || seg[node] < 0) return -1;
    if(l == r) return l;
    int mid = (l + r) / 2;
    int ret = get(st, en, 2 * node + 1, mid + 1, r);
    if(ret == -1) ret = get(st, en, 2 * node, l, mid);
    return ret;
}

int main()
{
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> n;
    for(int i = 1; i <= n; ++i){
        cin >> x[i] >> g[i] >> d[i];
        g[i] += g[i - 1];
        d[i] += d[i - 1];
        upd(i, i, d[i] - x[i]);
    }
    for(int i = 1; i <= n; ++i){
        upd(i, n, x[i] - x[i - 1]);
        ans = max(ans, g[get(i, n)] - g[i - 1]);
        upd(i, n, -d[i] + d[i - 1]);
    }
    cout << ans << endl;
    return 0;
}
// Don't forget special cases. (n = 1?)
// Look for the constraints. (Runtime array? overflow?)

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 3 ms 332 KB Output is correct
17 Correct 4 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 8 ms 476 KB Output is correct
22 Correct 16 ms 460 KB Output is correct
23 Correct 95 ms 716 KB Output is correct
24 Correct 94 ms 716 KB Output is correct

Subtask #3
0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 3 ms 332 KB Output is correct
17 Correct 4 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 8 ms 476 KB Output is correct
22 Correct 16 ms 460 KB Output is correct
23 Correct 95 ms 716 KB Output is correct
24 Correct 94 ms 716 KB Output is correct
25 Correct 5 ms 716 KB Output is correct
26 Correct 10 ms 1116 KB Output is correct
27 Correct 10 ms 1248 KB Output is correct
28 Correct 50 ms 4564 KB Output is correct
29 Correct 51 ms 4792 KB Output is correct
30 Correct 107 ms 9572 KB Output is correct
31 Correct 104 ms 8468 KB Output is correct
32 Correct 107 ms 8520 KB Output is correct
33 Correct 102 ms 8388 KB Output is correct
34 Execution timed out 1090 ms 8392 KB Time limit exceeded
35 Halted 0 ms 0 KB -