Submission #31868

#	Time	Username	Problem	Language	Result	Execution time	Memory
31868		YoLo	Brunhilda’s Birthday (BOI13_brunhilda)	C++14	71.43 / 100	613 ms	158656 KiB

brunhilda

#include<bits/stdc++.h>
using namespace std;
int n, m, a[100009], j, num[20000009], nex, cur, t = 1, ans[20000009];
signed main()
{
	scanf("%d%d",&n,&m);
	for(int i = 1; i <= n; i++)
		scanf("%d",&a[i]);
	for(int i = 1; i <= n; i++)
	{
		j = 0;
		while(j <= 10000000)
		{
			num[j] = max(num[j], j + a[i]);
			j += a[i];
		}
	}
	num[1] = num[0];
	ans[1] = 1;
	for(int i = 2; i <= 10000000; i++)
	{
		while(i >= num[cur] && cur < i)
		{
			cur ++;
		}
		if(cur == i)
			break;
		ans[i] = ans[cur] + 1;
	}
	while(m --)
	{
		int k;
		cin >> k;
		if(ans[k] > 0)
			printf("%d\n",ans[k]);
		else
			printf("oo\n");
	}
}

Compilation message (stderr)

brunhilda.cpp: In function 'int main()':
brunhilda.cpp:6:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
                     ^
brunhilda.cpp:8:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a[i]);
                    ^

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 31.428571428571427 / 60