Submission #617185

#	Time	Username	Problem	Language	Result	Execution time	Memory
617185		happypotato	Distributing Candies (IOI21_candies)	C++17	11 / 100	117 ms	14024 KiB

candies

#include "candies.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
vector<int> distribute_candies(vector<int> c, vector<int> l, vector<int> r, vector<int> v) {
    int n = c.size(), q = l.size();
    if (n <= 2000 && q <= 2000) {
        vector<int> a(n, 0);
        for (int i = 0; i < q; i++) {
            for (int j = l[i]; j <= r[i]; j++) {
                a[j] += v[i];
                a[j] = min(a[j], c[j]);
                a[j] = max(a[j], 0);
            }
        }
        return a;
    }
    bool allpos = true;
    for (int &x : v) {
        allpos &= (x > 0);
    }
    if (allpos) {
        ll int diff[n] = {0};
        for (int i = 0; i < q; i++) {
            diff[l[i]] += v[i];
            if (r[i] != n - 1) diff[r[i] + 1] -= v[i];
        }
        vector<int> ans;
        ll int ps = 0;
        for (int i = 0; i < n; i++) {
            ps += diff[i];
            ans.pb((ps < c[i] ? ps : c[i]));
        }
        return ans;
    }
    return {};
}

• Subtask 1: 3 / 3
• Subtask 2: 8 / 8
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29
• Subtask 5: 0 / 33