View Compilation Error

0_0_21376750_226.cpp:32:17: error: missing terminating " character
                 cout<<"-1<<endl;
                 ^
0_0_21376750_226.cpp: In function 'int main()':
0_0_21376750_226.cpp:30:13: error: 'p' was not declared in this scope
         GPR=p/sum;
             ^
0_0_21376750_226.cpp:33:9: error: expected primary-expression before 'else'
         else
         ^