2118：Mouse

A greedy mouse cici ate rat poison by mistake. To save herself, she have to drink.



Cici can only walk in four ways that marked in the photoes followed and only move in the region that colored blue..She expend energy every step.There are cheese in every position which cici can eat to gain energy once she is there.He will never reach the river if she run out of energy.The initially energy of cici is energy of the cheese at the coordinate (0,0).
if when the mouse arrive a position has 0 energy , he can't eat the cheese.
Now can you help the wretched monse to calculate whether can he get to the river.
If she can,calculate the minimun energy of the maximal energy of every possible position of the river(Y = N-1).

There are several test cases.In each case,there are three integers n(0<n<=200),m(0<m<=10),and k(0<k<=10)in the first line ,the next n lines followed. The second line has only one integer c(0<c<=100),the i-th line has m integers more than (i-1)th line.
k is the energy each step cost.

If the monkey can not get to the river,print "what a pity mouse!!" int one line;If she can,calculate the minimun energy of the maximal energy of every possible position of the river(Y = N-1).