View Compilation Error

0_0_29616238_7444.cpp: In function 'int main()':
0_0_29616238_7444.cpp:64:20: error: 'ok' was not declared in this scope
                 if(ok == 1) sum++;
                    ^
0_0_29616238_7444.cpp:86:1: error: expected '}' at end of input
 }
 ^