#1340Medium#24 in Stripe's list· asked at 4 companies
Network Delay Time
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What we know
Example 1
Input: times = [[2,1,1],[2,3,1],[3,4,1]], n = 4, k = 2 Output: 2
Example 2
Input: times = [[1,2,1]], n = 2, k = 1 Output: 1
Example 3
Input: times = [[1,2,1]], n = 2, k = 2 Output: -1
Constraints
- •
1 <= k <= n <= 100 - •
1 <= times.length <= 6000 - •
times[i].length == 3 - •
1 <= u_i, v_i <= n,u_i != v_i - •
0 <= w_i <= 100