题目链接:http://poj.org/problem?id=1163
//C++代码
#include<iostream>
using namespace std;
int main(){
int n,i,j,a[105][105];
cin>>n;
for(i=1;i<=n;i++){
for(j=1;j<=i;j++) cin>>a[i][j];
}
for(i=n-1;i>=1;i--){
for(j=1;j<=i;j++) a[i][j]+=(a[i+1][j]>a[i+1][j+1]? a[i+1][j]:a[i+1][j+1]);
}
cout<<a[1][1]<<endl;
return 0;
}