Submission #559574

#	Time	Username	Problem	Language	Result	Execution time	Memory
559574		Trunkty	Brunhilda’s Birthday (BOI13_brunhilda)	C++14	100 / 100	315 ms	119376 KiB

brunhilda

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
typedef long long ll;

#define DEBUG
#ifdef DEBUG
  #define debug(x) cout << #x << ": " << x << endl
#else
  #define debug(x)
#endif

int m,q,mini=2e9;
int maxi[10000005];
int low[10000005];
int dp[10000005];

int main(){
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	cin >> m >> q;
	for(int i=1;i<=m;i++){
		int a;
		cin >> a;
		for(int j=a;j<=1e7;j+=a){
			maxi[j] = max(maxi[j],a);
		}
		mini = min(mini,10000000-10000000%a);
	}
	for(int i=1e7;i>=1;i--){
		low[i] = mini;
		mini = min(mini,i-maxi[i]);
	}
	for(int i=1;i<=1e7;i++){
		dp[i] = 2e9;
		dp[i] = dp[low[i]]+1;
	}
	for(int i=1;i<=q;i++){
		int a;
		cin >> a;
		if(dp[a]<2e9){
			cout << dp[a] << "\n";
		}
		else{
			cout << "oo" << "\n";
		}
	}
	return 0;
}

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