zoukankan      html  css  js  c++  java
  • n个人作m幅画

    题目网址: http://codeforces.com/problemset/problem/416/B

    A well-known art union called "Kalevich is Alive!" manufactures objects d'art (pictures). The union consists of n painters who decided to organize their work as follows.

    Each painter uses only the color that was assigned to him. The colors are distinct for all painters. Let's assume that the first painter uses color 1, the second one uses color 2, and so on. Each picture will contain all these n colors. Adding the j-th color to the i-th picture takes the j-th painter tij units of time.

    Order is important everywhere, so the painters' work is ordered by the following rules:

    • Each picture is first painted by the first painter, then by the second one, and so on. That is, after the j-th painter finishes working on the picture, it must go to the (j + 1)-th painter (if j < n);
    • each painter works on the pictures in some order: first, he paints the first picture, then he paints the second picture and so on;
    • each painter can simultaneously work on at most one picture. However, the painters don't need any time to have a rest;
    • as soon as the j-th painter finishes his part of working on the picture, the picture immediately becomes available to the next painter.

    Given that the painters start working at time 0, find for each picture the time when it is ready for sale.

    Input

    The first line of the input contains integers m, n (1 ≤ m ≤ 50000, 1 ≤ n ≤ 5), where m is the number of pictures and n is the number of painters. Then follow the descriptions of the pictures, one per line. Each line contains n integers ti1, ti2, ..., tin (1 ≤ tij ≤ 1000), where tijis the time the j-th painter needs to work on the i-th picture.

    Output

    Print the sequence of m integers r1, r2, ..., rm, where ri is the moment when the n-th painter stopped working on the i-th picture.

    Sample test(s)
    input
    5 1
    1
    2
    3
    4
    5
    output
    1 3 6 10 15 
    input
    4 2
    2 5
    3 1
    5 3
    10 1
    output
    7 8 13 21 

    #include<stdio.h>
    #include<string.h>
    #include<algorithm>
    #include<iostream>
    using namespace std;
    const int N=50005;
    int a[N][5];
    int dp[N][5];
    
    int main()
    {
        int m,n,sum;
        while(scanf("%d%d",&m,&n)!=EOF)
        {
            for(int i=1;i<=m;i++)
            for(int j=1;j<=n;j++)
            cin>>a[i][j];
            memset(dp,0,sizeof(dp));
            sum=0;
            for(int i=1;i<=n;i++)
            {
                sum+=a[1][i];
                dp[1][i]=sum;
            }
            sum=0;
            for(int i=1;i<=m;i++)
            {
                sum+=a[i][1];
                dp[i][1]=sum;
            }
            for(int i=2;i<=m;i++)
            for(int j=2;j<=n;j++)
            dp[i][j]=max(dp[i][j-1],dp[i-1][j])+a[i][j];
            for(int i=1;i<m;i++)
            printf("%d ",dp[i][n]);
            printf("%d
    ",dp[m][n]);
        }
        return 0;
    }
  • 相关阅读:
    654. Maximum Binary Tree
    764. Largest Plus Sign
    763. Partition Labels
    dasd
    IT项目管理——《人月神话》读后感
    计算机网络实验八实验报告——应用Packet Tracer 5.0模拟器工具对WLAN进行配置
    Explain分析查询语句
    ​二十种实战调优MySQL性能优化的经验
    查询优化 | MySQL慢查询优化
    InnoDB并发事务
  • 原文地址:https://www.cnblogs.com/chen9510/p/5022169.html
Copyright © 2011-2022 走看看