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Vasiliy likes to rest after a hard work, so you may often meet him in some bar nearby. As all programmers do, he loves the famous drink "Beecola", which can be bought in n different shops in the city. It's known that the price of one bottle in the shop i is equal to xi coins.
Vasiliy plans to buy his favorite drink for q consecutive days. He knows, that on the i-th day he will be able to spent mi coins. Now, for each of the days he want to know in how many different shops he can buy a bottle of "Beecola".
The first line of the input contains a single integer n (1 ≤ n ≤ 100 000) — the number of shops in the city that sell Vasiliy's favourite drink.
The second line contains n integers xi (1 ≤ xi ≤ 100 000) — prices of the bottles of the drink in the i-th shop.
The third line contains a single integer q (1 ≤ q ≤ 100 000) — the number of days Vasiliy plans to buy the drink.
Then follow q lines each containing one integer mi (1 ≤ mi ≤ 109) — the number of coins Vasiliy can spent on the i-th day.
Print q integers. The i-th of them should be equal to the number of shops where Vasiliy will be able to buy a bottle of the drink on the i-th day.
5 3 10 8 6 11 4 1 10 3 11
0 4 1 5
On the first day, Vasiliy won't be able to buy a drink in any of the shops.
On the second day, Vasiliy can buy a drink in the shops 1, 2, 3 and 4.
On the third day, Vasiliy can buy a drink only in the shop number 1.
Finally, on the last day Vasiliy can buy a drink in any shop.
题目链接:
分析:二分的简单应用吧!在区间内查找上限下限,然后根据这些求出即可!
下面给出AC代码:
1 #include2 using namespace std; 3 int main() 4 { 5 int a[100010]; 6 int n,i,m,num; 7 while(scanf("%d",&n)!=EOF) 8 { 9 for(i=1;i<=n;i++)10 scanf("%d",&a[i]);11 sort(a+1,a+1+n);12 scanf("%d",&m);13 while(m--)14 {15 scanf("%d",&num);16 if(num =a[n])19 printf("%d\n",n);20 else21 {22 int left=1,right=n;23 int mid,ans;24 while(left<=right)25 {26 mid=(left+right)/2;27 if(a[mid]<=num)28 {29 ans=mid;30 left=mid+1;31 }32 else right=mid-1;33 }34 printf("%d\n",ans);35 }36 }37 }38 return 0;39 }
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