TSHPATH - The Turtle´s Shortest Path

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Given a list of cities. Each direct connection between two cities has its transportation cost (an integer bigger than 0). The goal is to find the paths of minimum cost between pairs of cities. Assume that the cost of each path (which is the sum of costs of all direct connections belongning to this path) is at most 200000. The name of a city is a string containing characters a,...,z and is at most 10 characters long.

Input

s [the number of tests <= 10]
n [the number of cities <= 10000]
NAME [city name]
p [the number of neighbours of city NAME]
nr cost [nr - index of a city connected to NAME (the index of the first city is 1)]
           [cost - the transportation cost]
r [the number of paths to find <= 100]
NAME1 NAME2 [NAME1 - source, NAME2 - destination]
[empty line separating the tests]

Output

cost [the minimum transportation cost from city NAME1 to city NAME2 (one per line)]

Example

Input:
1
4
gdansk
2
2 1
3 3
bydgoszcz
3
1 1
3 1
4 4
torun
3
1 3
2 1
4 1
warszawa
2
2 4
3 1
2
gdansk warszawa
bydgoszcz warszawa

Output:
3
2

Warning: large Input/Output data, be careful with certain languages

hide comments
iharsh234: 2016-07-08 22:16:06

optimisation overkilled AC in 0.45 sec

samarsingh: 2016-06-15 11:39:37

WA after testing every possible test cases available in the comments or on the internet...http://ideone.com/Ub4zCd
somebody pls help

aexpo: 2016-06-07 16:44:24

1.39 sec :)

rraj001: 2016-05-31 05:56:15

do not forget to clear your adjacency array aftere very test case,just costed me 3 WA's

ranjanakash166: 2016-05-28 11:40:00

SAME PROBLEM AS
http://www.spoj.com/problems/SHPATH/
COPY PASTE THE SAME CODE!!!!!
EASY GO!!!!!!!!!!!!!!

pratika: 2015-12-20 20:17:06

1. Hashmap for obtaining the indexes of source and destination.
2. Dijkstra with priority queue.
3. I/O optimization.
5.09 sec :)

bholagabbar: 2015-04-21 19:41:02

Goddamn TLE :( Anyways to optimize in JAVA?

Mahesh Kohli: 2015-04-08 13:52:14

can someone give a test case where we can get a possible seg fault

Arafat dad Khan: 2015-03-01 14:25:35

Ac After 40 Wcs Best Feeling in the world

Karun : 2014-09-29 02:48:50

clear() function is slowing stuff down!


Added by:mima
Date:2004-10-21
Time limit:5.659s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: NODEJS PERL6 VB.NET
Resource:DASM Programming League 2003 (thanks to Darek Dereniowski)
a copy of SHPATH problem with 60s time limit