• Codeforces Round #367 (Div. 2) B. Interesting drink (模拟)


    Interesting drink

    题目链接:

    http://codeforces.com/contest/706/problem/B

    Description

    ``` 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".

    </big>
    
    
     
    
    
    
    
    ##Input
    <big>
    

    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.

    </big>
    
    
    
    
    
    
    ##Output
    <big>
    

    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.

    </big>
    
    
     
     
    ##Examples
    <big>
    input
    5
    3 10 8 6 11
    4
    1
    10
    3
    11
    output
    0
    4
    1
    5
    </big>
    
    
    ##Source
    <big>
    Codeforces Round #367 (Div. 2)
    </big>
    
    
    
    
    <br/>
    ##题意:
    <big>
    给出一种饮料在不同店的价格,给出每天的消费额度,求每天可以选择多少个店.
    </big>
    
    
    <br/>
    ##题解:
    <big>
    预处理一个前缀和即可.
    </big>
    
    
    
    
    <br/>
    ##代码:
    ``` cpp
    #include <iostream>
    #include <cstdio>
    #include <cstring>
    #include <cmath>
    #include <algorithm>
    #include <queue>
    #include <map>
    #include <set>
    #include <stack>
    #include <vector>
    #include <list>
    #define LL long long
    #define eps 1e-8
    #define maxn 101000
    #define mod 100000007
    #define inf 0x3f3f3f3f
    #define mid(a,b) ((a+b)>>1)
    #define IN freopen("in.txt","r",stdin);
    using namespace std;
    
    int cnt[maxn];
    
    int main(int argc, char const *argv[])
    {
        //IN;
    
        int n;
        while(scanf("%d", &n) != EOF)
        {
            memset(cnt, 0, sizeof(cnt));
            for(int i=1; i<=n; i++) {
                int x; cin >> x;
                cnt[x]++;
            }
    
            for(int i=1; i<maxn; i++)
                cnt[i] += cnt[i-1];
    
            int q; cin >> q;
            while(q--) {
                int x; cin >> x;
                if(x >= maxn-1) printf("%d
    ", cnt[maxn-1]);
                else printf("%d
    ", cnt[x]);
            }
        }
    
        return 0;
    }
    
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  • 原文地址:https://www.cnblogs.com/Sunshine-tcf/p/5793568.html
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