Submission #1126535

#	Time	Username	Problem	Language	Result	Execution time	Memory
1126535		Agageldi	Brunhilda’s Birthday (BOI13_brunhilda)	C++20	97.14 / 100	1100 ms	79584 KiB

brunhilda

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

#define ll long long
#define ff first
#define ss second
#define pb push_back
#define sz(s) (int)s.size()
#define N 20000005

ll n, m, q, a[N], ad[N], t;

int main () {
	ios::sync_with_stdio(0);cin.tie(0);
	cin >> m >> q;
	for(int i = 1;i<=m;i++){
		cin >> a[i];
		for(int j = a[i]; j <= 1e7 + 1; j += a[i]) {
			ad[j - 1] = max(ad[j - 1], a[i] - 1);
		}
		ad[10000000] = max(ad[10000000],(10000000%a[i]));
	}
	for(int i = 1e7; i >= 1; i--) {
		ad[i] = max(ad[i],ad[i+1] - 1);
	}
	for(int i = 1; i <= q; i++) {
		int x, cnt = 0;
		cin >> x;
		bool tr = 0;
		while(x > 0) {
			t = x;
			x -= ad[x];
			cnt++;
			if(t == x) {
				tr = 1;
				break;
			}
		}
		if(tr) {
			cout << "oo\n";
			continue;
		}
		cout << cnt << '\n';
	}
}

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 57.1429 / 60