Submission #436520

#	Time	Username	Problem	Language	Result	Execution time	Memory
436520		VladaMG98	Distributing Candies (IOI21_candies)	C++17	0 / 100	5082 ms	8940 KiB

candies

#include "candies.h"

#include <bits/stdc++.h>
using namespace std;

const int MAXN = 200010;
typedef long long ll;
const ll INF = 1e18;
ll a[MAXN];

vector<int> distribute_candies(vector<int> c, vector<int> l, vector<int> r, vector<int> v) {
    int q = (int)c.size();
    int n = (int)l.size();
    vector<int> answer(q);
    a[1] = INF;
    a[2] = 0;
    for (int i = 3; i <= n + 2; i++) {
        a[i] = a[i - 1] + v[i - 3];
    }
    n += 2;
    // for (int i = 1; i <= n; i++) cout << a[i] << " "; cout << endl;     
    for (int q_i = 0; q_i < q; q_i++) {
        int C = c[q_i], ans;
        ll cur_mx = a[n], cur_mn = a[n];
        for (int i = n; i >= 1; i--) {
            cur_mx = max(cur_mx, a[i]);
            cur_mn = min(cur_mn, a[i]);
            if (cur_mx - cur_mn >= C) {
                // cout << i << " " << cur_mn << " " << cur_mx << endl;
                if (a[i] == cur_mx) {
                    ans = a[n] - cur_mn;
                } else {
                    ans = C - (cur_mx - a[n]);    
                }
                break;
            }
        }
        answer[q_i] = ans;
    }
    return answer;
}

Compilation message (stderr)

candies.cpp: In function 'std::vector<int> distribute_candies(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
candies.cpp:38:21: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
   38 |         answer[q_i] = ans;

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