• [AGC003]E


    Time limit : 2sec / Memory limit : 256MB

    Problem Statement

    Snuke got an integer sequence from his mother, as a birthday present. The sequence has (N) elements, and the (i)-th of them is (i). Snuke performs the following (Q) operations on this sequence. The (i)-th operation, described by a parameter (q_i), is as follows:

    • Take the first (q_i) elements from the sequence obtained by concatenating infinitely many copy of the current sequence, then replace the current sequence with those (q_i) elements.

    After these (Q) operations, find how many times each of the integers (1) through (N) appears in the final sequence.

    Constraints

    • (1≦N≦10^5)
    • (0≦Q≦10^5)
    • (1≦qi≦10^18)

    All input values are integers.

    Input

    The input is given from Standard Input in the following format:

    (N;Q)
    (q_1)
    (...)
    (q_Q)

    Output

    Print N lines. The i-th line (1≦(i)(N)) should contain the number of times integer (i) appears in the final sequence after the (Q) operations.

    Sample Input 1

    5 3
    6
    4
    11

    Sample Output 1

    3
    3
    3
    2
    0

    Sample Input 2

    10 10
    9
    13
    18
    8
    10
    10
    9
    19
    22
    27

    Sample Output 2

    7
    4
    4
    3
    3
    2
    2
    2
    0
    0

    题意

    有一个数字串S,初始长度为n,是1 2 3 4 …… n。
    有m次操作,每次操作给你一个正整数a[i],你先把S无穷重复,然后把前a[i]截取出来成为新的S。
    求m次操作后,每个数字在S中出现的次数。

    分析

    发现如果(a_i≥a_{i+1})那么(a_i)是无效的,把序列变成严格上升的
    然后令f[i]为第i次操作后的序列在最终序列中出现多少次,有f[m]=1
    整块整块的直接相乘
    如果有边角料,可以发现,长为x边角料与序列前x是相等的
    而所有序列除该位不存在以外,前x位都是相等的((a_i)序列严格上升
    那就找到一个最大的小于等于x的(a_i),对f[i]产生贡献,再用同样方式处理边角料
    最后x<n存s[x]表示序列1-i在最终序列出现多少次


    CODE

    ps:中途变量混乱,n m num难以分清

    #include<cstdio>
    #include<iostream>
    #define ll long long
    using namespace std;
    int n,num,m;
    ll a[101010];
    ll f[101010],s[101010];
    void sol(ll x,ll doe)
    {
    	if (x<a[1])
    	{
    		s[x]+=doe;
    		return;
    	}
    	int l=1,r=n;
    	int y;
    	while (l<=r)
    	{
    		int mid=(l+r)/2;
    		if (a[mid]<=x)
    		{
    			y=mid;
    			l=mid+1;
    		}
    		else r=mid-1;
    	}
    	f[y]+=doe*(x/a[y]);
    	x=x%a[y];
    	if (x) sol(x,doe);
    }
    int main()
    {
    //	freopen("E.in","r",stdin);
    //	freopen("E.out","w",stdout);
    	scanf("%d%d",&n,&m);
    	num=1;
    	a[1]=n;
    	ll x;
    	for (int i=1;i<=m;++i)
    	{
    		scanf("%lld",&x);
    		while (x<=a[num] && num)
    			--num;
    		++num;
    		a[num]=x;
    	}
    	m=n;
    	n=num;
    	f[n]=1;
    	for (int i=n-1;i>=1;--i)
    	{
    		f[i]+=f[i+1]*(a[i+1]/a[i]);
    		sol(a[i+1]%a[i],f[i+1]);
    	}
    	for (int i=a[1];i>=1;--i)
    		s[i]+=s[i+1];
    	for (int i=1;i<=a[1];++i)
    		s[i]+=f[1];
    	for (int i=1;i<=m;++i)
    		printf("%lld
    ",s[i]);
    	return 0;
    }
    
  • 相关阅读:
    PHP mysqli_get_client_version() 函数
    PHP mysqli_get_client_stats() 函数
    两台服务器配置互信
    (转)SQL server 容易让人误解的问题之 聚集表的物理顺序问题
    DML操作对索引的影响
    sqlserver 常用语句
    聚集索引
    表扫描
    sqltext的参数化处理
    sqlserver的执行计划
  • 原文地址:https://www.cnblogs.com/dogcdt/p/8361736.html
Copyright © 2020-2023  润新知