Main.cc: In function 'int main()':
Main.cc:18:13: error: 'tot' was not declared in this scope
tot += on - p;
^
Main.cc:21:20: error: 'tot' was not declared in this scope
} else if (tot - p + on != m) {
^
Main.cc:26:13: error: 'tot' was not declared in this scope
cout < tot << endl;
^
Main.cc:14:10: warning: unused variable 'o' [-Wunused-variable]
long o, pp = a, p = a;
^