CF1715E.Long Way Home
普及/提高-
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题目描述
Stanley lives in a country that consists of n cities (he lives in city 1 ). There are bidirectional roads between some of the cities, and you know how long it takes to ride through each of them. Additionally, there is a flight between each pair of cities, the flight between cities u and v takes (u−v)2 time.
Stanley is quite afraid of flying because of watching "Sully: Miracle on the Hudson" recently, so he can take at most k flights. Stanley wants to know the minimum time of a journey to each of the n cities from the city 1 .
输入格式
In the first line of input there are three integers n , m , and k ( 2≤n≤105 , 1≤m≤105 , 1≤k≤20 ) — the number of cities, the number of roads, and the maximal number of flights Stanley can take.
The following m lines describe the roads. Each contains three integers u , v , w ( 1≤u,v≤n , u=v , 1≤w≤109 ) — the cities the road connects and the time it takes to ride through. Note that some pairs of cities may be connected by more than one road.
输出格式
Print n integers, i -th of which is equal to the minimum time of traveling to city i .
输入输出样例
输入#1
3 1 2 1 3 1
输出#1
0 1 1
输入#2
4 3 1 1 2 3 2 4 5 3 4 7
输出#2
0 1 4 6
输入#3
2 1 1 2 1 893746473
输出#3
0 1
输入#4
5 5 2 2 1 33 1 5 93 5 3 48 2 3 21 4 2 1
输出#4
0 1 2 2 3
说明/提示
In the first sample, it takes no time to get to city 1; to get to city 2 it is possible to use a flight between 1 and 2, which will take 1 unit of time; to city 3 you can get via a road from city 1, which will take 1 unit of time.
In the second sample, it also takes no time to get to city 1. To get to city 2 Stanley should use a flight between 1 and 2, which will take 1 unit of time. To get to city 3 Stanley can ride between cities 1 and 2, which will take 3 units of time, and then use a flight between 2 and 3. To get to city 4 Stanley should use a flight between 1 and 2, then take a ride from 2 to 4, which will take 5 units of time.