View Compilation Error

0_0_35192157_20724.cpp: In function 'int main()':
0_0_35192157_20724.cpp:75:4: error: 'p' was not declared in this scope
    p+=m-1;
    ^
0_0_35192157_20724.cpp:79:3: error: 'p' was not declared in this scope
   p=0;
   ^
0_0_35192157_20724.cpp:83:25: error: 'j' was not declared in this scope
    if(p<a.size()&&a[i]==j)
                         ^