View Compilation Error

0_0_33453020_25349.cpp: In function 'int main()':
0_0_33453020_25349.cpp:127:3: error: expected ';' before 'bool'
   bool ok = true;
   ^
0_0_33453020_25349.cpp:130:5: error: 'ok' was not declared in this scope
     ok = false;
     ^
0_0_33453020_25349.cpp:135:8: error: 'ok' was not declared in this scope
   if (!ok) {
        ^
0_0_33453020_25349.cpp:158:8: error: 'ok' was not declared in this scope
   puts(ok && ans == pn ? "YES" : "NO");
        ^