Submission #83515

#	Time	Username	Problem	Language	Result	Execution time	Memory
83515		teomrn	Brunhilda’s Birthday (BOI13_brunhilda)	C++14	100 / 100	419 ms	117776 KiB

brunhilda

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

const int NMAX = 100010, VMAX = 10000000;
int prime[NMAX + 10];
int lower[VMAX + 10];
int dist[VMAX + 10];

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int m, q;
    cin >> m >> q;

    while (m--) {
        int x;
        cin >> x;
        for (int i = 0; i <= VMAX; i += x)
            lower[i] = x;
    }

    int act = 0, until = 0, next = 0;
    for (int i = 0; i <= VMAX; i++) {
        if (i > until)
            until = next, act++;
        if (until < i)
            break;
        dist[i] = act;
        if (lower[i])
            next = max(next, i + lower[i] - 1);
    }

    while (q--) {
        int x;
        cin >> x;
        if (dist[x])
            cout << dist[x] << '\n';
        else
            cout << "oo\n";
    }
    return 0;
}

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 60 / 60