gistfile1.txt

#include <iostream>
#include <string>
#include <sstream>
#include <vector>

using namespace std;

void solve(istream& in)
{
	vector<vector<int> > v;
	string s;
	for(int i = 1; getline(in,s); i++){
		istringstream iss(s);
		v.push_back(vector<int>(i));
		for(int j = 0; j < i; j++) iss >> v[i-1][j];
	}
	reverse(v.begin(),v.end());
	for(int i = 0;i < (int)v.size() - 1; i++){
		for(int j = 0; j < (int)v[i+1].size(); j++) v[i+1][j] += max(v[i][j],v[i][j+1]);
	}

	cout << (*(v.end() - 1))[0] << endl;
}

int main(){
	string s = "\n\
 75\n\
 95 64\n\
 17 47 82\n\
 18 35 87 10\n\
 20 04 82 47 65\n\
 19 01 23 75 03 34\n\
 88 02 77 73 07 63 67\n\
 99 65 04 28 06 16 70 92\n\
 41 41 26 56 83 40 80 70 33\n\
 41 48 72 33 47 32 37 16 94 29\n\
 53 71 44 65 25 43 91 52 97 51 14\n\
 70 11 33 28 77 73 17 78 39 68 17 57\n\
 91 71 52 38 17 14 91 43 58 50 27 29 48\n\
 63 66 04 68 89 53 67 30 73 16 69 87 40 31\n\
 04 62 98 27 23 09 70 98 73 93 38 53 60 04 23\n";
	solve(istringstream(s));
	return 0;
}