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Correct

61Size
Leading solution size is 30.
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Test Suite

Test
Code Input and Output
1
Pass
 
%%
tic
r=uint64(308436464205151562);
pmax=uint64(1850618785230909388);
rings=solve_rings(r,pmax);
assert(isequal(rings,3),sprintf('rings=%i, Expected 3',rings))
x =
    @(r0,K)(2*K+2*r0-1)*K
2
Pass
 
%%
r=uint64(760961177192651897);
pmax=uint64(1521922354385303795);
rings=solve_rings(r,pmax);
assert(isequal(rings,1),sprintf('rings=%i, Expected 1',rings))
x =
    @(r0,K)(2*K+2*r0-1)*K
3
Pass
 
%%
r=uint64(1);
pmax=uint64(2000000000000000000);
rings=solve_rings(r,pmax);
assert(isequal(rings,999999999),sprintf('rings=%i, Expected 999999999',rings))
x =
    @(r0,K)(2*K+2*r0-1)*K
4
Pass
 
%%
r=uint64(1000);
pmax=uint64(2000000000000000000);
rings=solve_rings(r,pmax);
assert(isequal(rings,999999500),sprintf('rings=%i, Expected 999999500',rings))
x =
    @(r0,K)(2*K+2*r0-1)*K
5
Pass
 
%%
r=uint64(3);
pmax=uint64(1243678947483597075);
rings=solve_rings(r,pmax);
assert(isequal(rings,788567988),sprintf('rings=%i, Expected 788567988',rings))
x =
    @(r0,K)(2*K+2*r0-1)*K
6
Pass
 
%%
r=uint64(432);
pmax=uint64(1800692162794074077);
rings=solve_rings(r,pmax);
assert(isequal(rings,948865465),sprintf('rings=%i, Expected 948865465',rings))
toc
x =
    @(r0,K)(2*K+2*r0-1)*K
Elapsed time is 0.039589 seconds.