10224: CCC '18 J3 - Are we there yet?
[Creator : ]
Description
You decide to go for a very long drive on a very straight road. Along this road are five cities. As you travel, you record the distance between each pair of consecutive cities.
You would like to calculate a distance table that indicates the distance between any two of the cities you have encountered.
You would like to calculate a distance table that indicates the distance between any two of the cities you have encountered.
Input
The first line contains 4 positive integers less than 1000, each representing the distances between consecutive pairs of consecutive cities: specifically, the $i^{th}$ integer represents the distance between city $i$ and city $i+1$.
Output
The output should be 5 lines, with the $i^{th}$ line $(1≤i≤5)$ containing the distance from city $i$ to cities 1,2,3,4,5 in order, separated by one space.
Sample 1 Input
3 10 12 5
Sample 1 Output
0 3 13 25 30
3 0 10 22 27
13 10 0 12 17
25 22 12 0 5
30 27 17 5 0
The first line of output contains:
- 0, since the distance from city 1 to city 1 is 0;
- 3, since the distance between city 1 and city 2 is 3;
- 13, since the distance between city 1 and city 3 is 3+10=13;
- 25, since the distance between city 1 and city 4 is 3+10+12=25;
- 30, since the distance between city 1 and city 5 is 3+10+12+5=30.