The Triangle | ||||||
| ||||||
Description | ||||||
7 3 8 8 1 0 2 7 4 4 4 5 2 6 5
(Figure 1) Figure 1 shows a number triangle. Write a program that calculates the highest sum of numbers passed on a route that starts at the top and ends somewhere on the base. Each step can go either diagonally down to the left or diagonally down to the right. | ||||||
Input | ||||||
Your program is to read from standard input. For each test case, the first line contains one integer N: the number of rows in the triangle. The following N lines describe the data of the triangle. The number of rows in the triangle is > 1 but <= 100. The numbers in the triangle, all integers, are between 0 and 99. Process to the end of file. | ||||||
Output | ||||||
For each test case, your program is to write to standard output. The highest sum is written as an integer. | ||||||
Sample Input | ||||||
5 | ||||||
Sample Output | ||||||
30 |
#include<stdio.h>
#include<string.h>
#include<iostream>
using namespace std;
int a[1010][1010];
int dp[1010][1010];
int main()
{
int n;
while(~scanf("%d",&n))
{
memset(a,0,sizeof(a));
memset(dp,0,sizeof(dp));
for(int i=0;i<n;i++)
{
for(int j=0;j<=i;j++)
{
scanf("%d",&a[i][j]);
}
}
for(int i=0;i<n;i++)
{
for(int j=0;j<=i;j++)
{
dp[i][j]=a[i][j];
}
}
for(int i=n-1;i>0;i--)
{
for(int j=0;j<=i;j++)
{
dp[i-1][j]+=max(dp[i][j],dp[i][j+1]);
}
}
printf("%d\n",dp[0][0]);
}
}
//2
#include<stdio.h>
#include<string.h>
#include<iostream>
using namespace std;
int a[1010][1010];
int main()
{
int t;
while(~scanf("%d",&t))
{
for(int i=0;i<t;i++)
{
for(int j=0;j<=i;j++)
{
scanf("%d",&a[i][j]);
}
}
for(int i=t-1;i>0;i--)
{
for(int j=0;j<=i;j++)
{
a[i-1][j]+=max(a[i][j],a[i][j+1]);
}
}
printf("%d\n",a[0][0]);
}
}