Cow Bowling
Time Limit: 1000MS | Memory Limit: 65536K | |
Total Submissions: 4594 | Accepted: 2973 |
Description
The
cows don't use actual bowling balls when they go bowling. They each
take a number (in the range 0..99), though, and line up in a standard
bowling-pin-like triangle like this:
Given a triangle with N (1 <= N <= 350) rows, determine the highest possible sum achievable.
7 3 8 8 1 0 2 7 4 4 4 5 2 6 5Then the other cows traverse the triangle starting from its tip and moving "down" to one of the two diagonally adjacent cows until the "bottom" row is reached. The cow's score is the sum of the numbers of the cows visited along the way. The cow with the highest score wins that frame.
Given a triangle with N (1 <= N <= 350) rows, determine the highest possible sum achievable.
Input
Line 1: A single integer, N
Lines 2..N+1: Line i+1 contains i space-separated integers that represent row i of the triangle.
Lines 2..N+1: Line i+1 contains i space-separated integers that represent row i of the triangle.
Output
Line 1: The largest sum achievable using the traversal rules
Sample Input
5 7 3 8 8 1 0 2 7 4 4 4 5 2 6 5
Sample Output
30
Hint
Explanation of the sample:
7 * 3 8 * 8 1 0 * 2 7 4 4 * 4 5 2 6 5The highest score is achievable by traversing the cows as shown above.
此题与1163雷同
import java.util.*; public class Main { public static void main(String[] args) { Scanner cin = new Scanner(System.in); int height = cin.nextInt(); int[][] tree = new int[height][height]; int[][] max = new int[height][height]; int maxValue = 0; int left, right = 0; for(int i = 0; i < height; i++) { for(int j = 0; j <= i; j++) { tree[i][j] = cin.nextInt(); // System.out.print(tree[i][j] + " "); } // System.out.println("\n"); } max[0][0] = tree[0][0]; for(int i = 1; i < height; i++) { for(int j = 0; j <= i; j++) { if(j == 0) max[i][j] = max[i-1][j] + tree[i][j]; else if(j == i) max[i][j] = max[i-1][j-1] + tree[i][j]; else { if(max[i-1][j-1] >= max[i-1][j]) max[i][j] = max[i-1][j-1] + tree[i][j]; else max[i][j] = max[i-1][j] + tree[i][j]; } } } for(int j = 0; j < height; j++) { if(max[height-1][j] > maxValue) maxValue = max[height-1][j]; } System.out.println(maxValue); } }
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