SHPATH  The Shortest Path
You are 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
Added by:  Darek Dereniowski 
Date:  20040510 
Time limit:  1.5s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel Pentium G860 3GHz) 
Languages:  All except: SCM chicken 
Resource:  DASM Programming League 2003 (problemset 11) 
hide comments
Kishore H Patel:
20150414 13:36:45
JAVA users: Don't use iterator for loop, instead use explicit iterator for loop. I mean use for(int i = 0; i < list.size(); i++) and not for(int i : list) Last edit: 20150414 13:37:43 

getting started:
20150319 15:12:45
2 tle , 2 re , 4 wa, finally acc .... smile restored 

childe:
20150221 07:19:38
I am curious how they made it within 0.00s. it takes more than it for just reading the input. 

Satyaanveshi:
20150215 03:32:19
I got A/C using C++ 4.9 but TLE with 4.3.2. My running time was 1.44. Last edit: 20150227 09:33:29 

Rahul Lingala:
20141227 18:45:10
Exact 1.50s!


DivineAtheist:
20141227 01:47:09
hard to get AC...Use TSHPATH to experiment... 

Shubham Depp Bansal:
20141227 01:47:09
Please clarify whether transportation cost from X1 to X2 may be different from that of from X2 to X1 (input format allows that, but in real life that would sound a little absurd).


John Mario:
20141227 01:47:09
@J: For more advice go to the forum, here we would be just guessing what may be the slow part of your code, but as an additional note, check how you are making the I/O. 