public static void main(String[] args) {
		
		int[][] arr = 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,63,7,78,27,80,36,69,41,6,92,32,78,37,82,30,5,18,87,99,72,19,99},{44,20,55,77,69,91,27,31,28,81,80,27,2,7,97,23,95,98,12,25,75,29,47,71,7,47,78,39,41,59,27,76,13,15,66,61,68,35,69,86,16,53,67,63,99,85,41,56,8,28,33,40,94,76,90,85,31,70,24,65,84,65,99,82,19,25,54,37,21,46,33,2,52,99,51,33,26,4,87,2,8,18,96},{54,42,61,45,91,6,64,79,80,82,32,16,83,63,42,49,19,78,65,97,40,42,14,61,49,34,4,18,25,98,59,30,82,72,26,88,54,36,21,75,3,88,99,53,46,51,55,78,22,94,34,40,68,87,84,25,30,76,25,8,92,84,42,61,40,38,9,99,40,23,29,39,46,55,10,90,35,84,56,70,63,23,91,39},{52,92,3,71,89,7,9,37,68,66,58,20,44,92,51,56,13,71,79,99,26,37,2,6,16,67,36,52,58,16,79,73,56,60,59,27,44,77,94,82,20,50,98,33,9,87,94,37,40,83,64,83,58,85,17,76,53,2,83,52,22,27,39,20,48,92,45,21,9,42,24,23,12,37,52,28,50,78,79,20,86,62,73,20,59},{54,96,80,15,91,90,99,70,10,9,58,90,93,50,81,99,54,38,36,10,30,11,35,84,16,45,82,18,11,97,36,43,96,79,97,65,40,48,23,19,17,31,64,52,65,65,37,32,65,76,99,79,34,65,79,27,55,33,3,1,33,27,61,28,66,8,4,70,49,46,48,83,1,45,19,96,13,81,14,21,31,79,93,85,50,5},{92,92,48,84,59,98,31,53,23,27,15,22,79,95,24,76,5,79,16,93,97,89,38,89,42,83,2,88,94,95,82,21,1,97,48,39,31,78,9,65,50,56,97,61,1,7,65,27,21,23,14,15,80,97,44,78,49,35,33,45,81,74,34,5,31,57,9,38,94,7,69,54,69,32,65,68,46,68,78,90,24,28,49,51,45,86,35},{41,63,89,76,87,31,86,9,46,14,87,82,22,29,47,16,13,10,70,72,82,95,48,64,58,43,13,75,42,69,21,12,67,13,64,85,58,23,98,9,37,76,5,22,31,12,66,50,29,99,86,72,45,25,10,28,19,6,90,43,29,31,67,79,46,25,74,14,97,35,76,37,65,46,23,82,6,22,30,76,93,66,94,17,96,13,20,72},{63,40,78,8,52,9,90,41,70,28,36,14,46,44,85,96,24,52,58,15,87,37,5,98,99,39,13,61,76,38,44,99,83,74,90,22,53,80,56,98,30,51,63,39,44,30,91,91,4,22,27,73,17,35,53,18,35,45,54,56,27,78,48,13,69,36,44,38,71,25,30,56,15,22,73,43,32,69,59,25,93,83,45,11,34,94,44,39,92},{12,36,56,88,13,96,16,12,55,54,11,47,19,78,17,17,68,81,77,51,42,55,99,85,66,27,81,79,93,42,65,61,69,74,14,1,18,56,12,1,58,37,91,22,42,66,83,25,19,4,96,41,25,45,18,69,96,88,36,93,10,12,98,32,44,83,83,4,72,91,4,27,73,7,34,37,71,60,59,31,1,54,54,44,96,93,83,36,4,45},{30,18,22,20,42,96,65,79,17,41,55,69,94,81,29,80,91,31,85,25,47,26,43,49,2,99,34,67,99,76,16,14,15,93,8,32,99,44,61,77,67,50,43,55,87,55,53,72,17,46,62,25,50,99,73,5,93,48,17,31,70,80,59,9,44,59,45,13,74,66,58,94,87,73,16,14,85,38,74,99,64,23,79,28,71,42,20,37,82,31,23},{51,96,39,65,46,71,56,13,29,68,53,86,45,33,51,49,12,91,21,21,76,85,2,17,98,15,46,12,60,21,88,30,92,83,44,59,42,50,27,88,46,86,94,73,45,54,23,24,14,10,94,21,20,34,23,51,4,83,99,75,90,63,60,16,22,33,83,70,11,32,10,50,29,30,83,46,11,5,31,17,86,42,49,1,44,63,28,60,7,78,95,40},{44,61,89,59,4,49,51,27,69,71,46,76,44,4,9,34,56,39,15,6,94,91,75,90,65,27,56,23,74,6,23,33,36,69,14,39,5,34,35,57,33,22,76,46,56,10,61,65,98,9,16,69,4,62,65,18,99,76,49,18,72,66,73,83,82,40,76,31,89,91,27,88,17,35,41,35,32,51,32,67,52,68,74,85,80,57,7,11,62,66,47,22,67},{65,37,19,97,26,17,16,24,24,17,50,37,64,82,24,36,32,11,68,34,69,31,32,89,79,93,96,68,49,90,14,23,4,4,67,99,81,74,70,74,36,96,68,9,64,39,88,35,54,89,96,58,66,27,88,97,32,14,6,35,78,20,71,6,85,66,57,2,58,91,72,5,29,56,73,48,86,52,9,93,22,57,79,42,12,1,31,68,17,59,63,76,7,77},{73,81,14,13,17,20,11,9,1,83,8,85,91,70,84,63,62,77,37,7,47,1,59,95,39,69,39,21,99,9,87,2,97,16,92,36,74,71,90,66,33,73,73,75,52,91,11,12,26,53,5,26,26,48,61,50,90,65,1,87,42,47,74,35,22,73,24,26,56,70,52,5,48,41,31,18,83,27,21,39,80,85,26,8,44,2,71,7,63,22,5,52,19,8,20},{17,25,21,11,72,93,33,49,64,23,53,82,3,13,91,65,85,2,40,5,42,31,77,42,5,36,6,54,4,58,7,76,87,83,25,57,66,12,74,33,85,37,74,32,20,69,3,97,91,68,82,44,19,14,89,28,85,85,80,53,34,87,58,98,88,78,48,65,98,40,11,57,10,67,70,81,60,79,74,72,97,59,79,47,30,20,54,80,89,91,14,5,33,36,79,39},{60,85,59,39,60,7,57,76,77,92,6,35,15,72,23,41,45,52,95,18,64,79,86,53,56,31,69,11,91,31,84,50,44,82,22,81,41,40,30,42,30,91,48,94,74,76,64,58,74,25,96,57,14,19,3,99,28,83,15,75,99,1,89,85,79,50,3,95,32,67,44,8,7,41,62,64,29,20,14,76,26,55,48,71,69,66,19,72,44,25,14,1,48,74,12,98,7},{64,66,84,24,18,16,27,48,20,14,47,69,30,86,48,40,23,16,61,21,51,50,26,47,35,33,91,28,78,64,43,68,4,79,51,8,19,60,52,95,6,68,46,86,35,97,27,58,4,65,30,58,99,12,12,75,91,39,50,31,42,64,70,4,46,7,98,73,98,93,37,89,77,91,64,71,64,65,66,21,78,62,81,74,42,20,83,70,73,95,78,45,92,27,34,53,71,15},{30,11,85,31,34,71,13,48,5,14,44,3,19,67,23,73,19,57,6,90,94,72,57,69,81,62,59,68,88,57,55,69,49,13,7,87,97,80,89,5,71,5,5,26,38,40,16,62,45,99,18,38,98,24,21,26,62,74,69,4,85,57,77,35,58,67,91,79,79,57,86,28,66,34,72,51,76,78,36,95,63,90,8,78,47,63,45,31,22,70,52,48,79,94,15,77,61,67,68},{23,33,44,81,80,92,93,75,94,88,23,61,39,76,22,3,28,94,32,6,49,65,41,34,18,23,8,47,62,60,3,63,33,13,80,52,31,54,73,43,70,26,16,69,57,87,83,31,3,93,70,81,47,95,77,44,29,68,39,51,56,59,63,7,25,70,7,77,43,53,64,3,94,42,95,39,18,1,66,21,16,97,20,50,90,16,70,10,95,69,29,6,25,61,41,26,15,59,63,35}};
		int[][] resArr = new int[100][101];
		
		resArr[0][0] = arr[0][0];
		
		for(int i = 1; i < 100; i++)
		{
			for(int j = 0; j <= i; j++)
			{
				if(j != 0)
				{
					if(resArr[i-1][j-1] < resArr[i-1][j])
						resArr[i][j] = arr[i][j] + resArr[i-1][j];
					else
						resArr[i][j] = arr[i][j] + resArr[i-1][j-1];
				}
				else
					resArr[i][j] = arr[i][j] + resArr[i-1][j];
			}
		}
		
		int res = 0;
		
		for(int i = 0; i < 100; i++)
		{
			if(resArr[99][i] > res)
				res = resArr[99][i];
		}
		
		System.out.println(res);
	}