oj.uz

Submission #682030

# Submission time Handle Problem Language Result Execution time Memory
682030 2023-01-15T10:29:35 Z YENGOYAN Divide and conquer (IZhO14_divide) C++17
0 / 100
 1 ms 320 KB 
/*
    //\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\\
    \\                                    //
    //  271828___182845__904523__53602__  \\
    \\  87___47____13______52____66__24_  //
    //  97___75____72______47____09___36  \\
    \\  999595_____74______96____69___67  //
    //  62___77____24______07____66__30_  \\
    \\  35___35____47______59____45713__  //
    //                                    \\
    \\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\//
                                                */

#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <cmath>
#include <climits>
#include <algorithm>
#include <random>
#include <queue>
#include <deque>
#include <iomanip>
#include <string>
#include <tuple>
#include <bitset>
#include <chrono>
#include <ctime>
#include <fstream>
#include <stack>
#include <cstdio>

using namespace std;
using ll = long long;
const int N = 3e5 + 5;
const ll mod = 1e9 + 7, inf = LLONG_MAX;

struct camp {
    int x, g, d;    
};

void solve() {
    // pref_en[r] - pref_en[l - 1] >= x[r] - x[l - 1]
    // pref_en[r] - x[r] >= pref_en[l - 1] - x[l - 1]
    int n; cin >> n;
    vector<camp> v(n);
    for (int i = 0; i < n; ++i) {
        cin >> v[i].x >> v[i].g >> v[i].d;
    }
    vector<ll> pref(n + 1);
    for (int i = 1; i <= n; ++i) {
        pref[i] = pref[i - 1] + v[i - 1].d;
    }
    vector<ll> pref_en(n + 1), gold(n + 1);
    for (int i = 1; i <= n; ++i) {
        pref_en[i] = pref[i] - v[i - 1].x;
        gold[i] = gold[i - 1] + v[i - 1].g;
    }
    long long ans = 0;
    //for (int i = 1; i <= n; ++i) cout << pref_en[i] << " \n"[i == n];
    for (int i = 1; i <= n; ++i) {
        ans = max(ans, v[i - 1].g * 1ll);
        for (int j = i + 1; j <= n; ++j) {
            if (pref_en[i - 1] <= pref_en[j]) ans = max(ans, gold[j] - gold[i - 1]);
        }
    }
    cout << ans;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    //int t; cin >> t;
    //while (t--) 
        solve();
}

Subtask #1
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 320 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 320 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 320 KB Output isn't correct
3 Halted 0 ms 0 KB -