NYOJ-171 Smart KK

the Smart KK
Time limit: Ms | Memory Limit: 65535 KB
Difficulty: 3
Describe
The design of an African pavilion is inspired by the undulating dunes of the legendary desert, reflecting the changing and colourful nature and urban landscape of the country. The pavilion is made up of five parts, and the in-house cinema plays a widescreen short film called "Blink of an instant", reflecting the astonishing changes in people's living standards and urban living environment since the founding of the PRC.
The movable "Dune" is inspired by its unique and majestic natural landscape-the legendary rugged dunes. The magnificent structure, recyclable building materials, and nature complement each other. Around the week, it was discovered that it was inspired by the constantly changing shape of the dunes. Realistic to the point of view from any angle, can clearly identify the characteristics of the dunes.
It "slopes" up to 20 meters, the breeze blowing, do you feel the flow of sand? Hand to touch, but found that the original is a "magic trick." The surface of the stainless steel panel presents a variety of colors, from different angles to show different colors, thus imitating the light of the flowing sand dunes.
Into the third showroom there is an oversized screen, with marvelous effects that make the audience feel like they have come to the vast desert. What is even more fascinating is that a small animal, "KK", is moving from the upper left corner of the desert area (the rectangle) down to the right and down. KK is so smart that it can choose to eat as many worm lines as possible during the run.
Do you know how many worms it eats?
Input
First line: N M (1≤n m≤20 0≤xij≤500 (i=1,2?). N, J=1,2?,m)
) means that the desert is a n*m rectangular area.
Next there are N rows: Each line has m positive integers, Xi1 Xi2 ... Xim indicates the number of insects in each location (separated by a single space)
Assume that "KK" can only go right or down.
Output
The output has an integer that says "KK" eats the largest number of bugs.
Sample input
3 4
3 1 2 8
5 3 4 6
1 0 2 3
Sample output
24
Source
The third Henan Province Program design Competition

The simplest dynamic programming, referring to a digital triangle:

The code is as follows:

#include <iostream>#include <cstdio>#include <algorithm>#include <cstring>using namespace STD;intdp[ +][ +]={0};intMain () {intN,m;scanf("%d%d", &n,&m); for(intI=1; i<=n;i++) { for(intj=1; j<=m;j++) {scanf("%d", &dp[i][j]); Dp[i][j]+=max (dp[i-1][j],dp[i][j-1]); }    }printf("%d\n", Dp[n][m]);return 0;}

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NYOJ-171 Smart KK