View Compilation Error

0_0_24273261_23817.cpp: In function 'int getsg(int)':
0_0_24273261_23817.cpp:8:9: error: expected ';' before 'for'
         for(int j=0;f[j]<=i;j++) s[sg[i-f[j]]]=1;
         ^
0_0_24273261_23817.cpp:8:23: error: 'j' was not declared in this scope
         for(int j=0;f[j]<=i;j++) s[sg[i-f[j]]]=1;
                       ^