View Compilation Error

0_0_37755525_1163.cpp: In function 'int check(int)':
0_0_37755525_1163.cpp:32:8: error: redeclaration of 'll w'
     ll w=f[s];
        ^
0_0_37755525_1163.cpp:23:11: note: 'll w' previously declared here
     {  ll w=f[s];
           ^