题目描述
Cities on a map are connected by a number of roads. The number of roads between each city is in an array and city ${0}$ is the starting location. The number of roads from city ${0}$ to city ${1}$ is the first value in the array, from city ${1}$ to city $2$ is the second, and so on.
How many paths are there from city ${0}$ to the last city in the list, modulo $1234567$?
Example
$n=4$
$routes=[3,4,5]$
There are $3$ roads to city ${1}$, ${4}$ roads to city $2$ and $5$ roads to city $3$. The total number of roads is $3\times4\times5\mod1234567=60$.
Note
Pass all the towns T_{i} for i=1 to n-1 in numerical order to reach T_{n}.
Function Description
Complete the connectingTowns function in the editor below.
connectingTowns has the following parameters:
int n: the number of towns
int routes[n-1]: the number of routes between towns
Returns
int: the total number of routes, modulo 1234567.
Input Format
The first line contains an integer T, T test-cases follow.
Each test-case has 2 lines.
The first line contains an integer N (the number of towns).
The second line contains N - 1 space separated integers where the i^{th} integer denotes the number of routes, N_{i}, from the town T_{i} to T_{i+1}
Constraints
1 <= T<=1000
2< N <=100
1 <= routes[i] <=1000
Sample Input
2
3
1 3
4
2 2 2
Sample Output
3
8
Explanation
Case 1: 1 route from T_{1} to T_{2}, 3 routes from T_{2} to T_{3}, hence only 3 routes.
Case 2: There are 2 routes from each city to the next, hence 2 * 2 * 2 = 8.
输入格式
见题面
输出格式
见题面