Submission #1069192

#	Time	Username	Problem	Language	Result	Execution time	Memory
1069192		ortsac	Brunhilda’s Birthday (BOI13_brunhilda)	C++17	100 / 100	193 ms	158032 KiB

brunhilda

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

#define int long long
#define pii pair<long long, long long>
#define fr first
#define se second

int inf = 0x3f3f3f3f3f3f3f3f;
const int MAXN = 1e7 + 10;
int dp[MAXN + 10], trans[MAXN + 10];

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n, q;
    cin >> n >> q;
    for (int i = 0; i < n; i++) {
        int a;
        cin >> a;
        for (int j = (a - 1); j <= MAXN; j += a) {
            trans[j] = a - 1;
        }
        trans[MAXN] = max(trans[MAXN], MAXN % a);
    }
    for (int i = MAXN; i >= 1; i--) {
        trans[i] = max(trans[i], trans[i + 1] - 1);
    }
    for (int i = 1; i <= MAXN; i++) {
        dp[i] = inf;
        dp[i] = min(dp[i], dp[i - trans[i]] + 1);
    }
    while (q--) {
        int x;
        cin >> x;
        if (dp[x] == inf) cout << "oo\n";
        else cout << dp[x] << "\n";
    }
}

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