View Compilation Error

0_0_33735943_8818.cpp: In function 'int main()':
0_0_33735943_8818.cpp:24:29: error: 'i' was not declared in this scope
   if(s[0]=='0') s0[0]=1, s1[i]=0;
                             ^
0_0_33735943_8818.cpp:26:8: error: 'i' was not declared in this scope
   if(t[i]=='0') t0[0]=1, t1[0]=0;
        ^