Data type problem

#1


atcoderdp coin problem
my dp array storing integer by default

#2

@mohitmahi123, you can explicitly typecast it to double
why we need to do that??
eg

int a=3;
int b=2;
double c=a/b ;
cout<<c; // output=1
this is because / operator (which is implemented as a function) sees a and b as int so it will return int as output but if you typecast it as c=(double)©/b;
/ operator sees one of its argument as double so it knows that it had to return double value
cout<<c; // output=1.5000000000 (after overloading)

i have corrected your code: https://ide.codingblocks.com/s/245288 (corrected your memoization as you were not considering nooftails since i and j are always same so don;t store j)

#3

i found my mistake yesterday but in your corrected code u should remove double in line no 15 because it is giving wrong answer.and yes my memoization is wrong. thanks for solving my problem.

#4

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