View Compilation Error

0_0_21147703_12469.cpp: In function 'int main()':
0_0_21147703_12469.cpp:57:13: error: 'i' was not declared in this scope
         for(i=0; i<maxn; i++)
             ^
0_0_21147703_12469.cpp:59:17: error: 'j' was not declared in this scope
             for(j=0; j<maxn; j++)
                 ^