View Compilation Error

0_0_22153210_10163.cpp: In function 'int dis(int, int)':
0_0_22153210_10163.cpp:8:2: error: 'nbsp' was not declared in this scope
     return d[y] - d[x];
  ^
0_0_22153210_10163.cpp: In function 'bool pd(int)':
0_0_22153210_10163.cpp:11:2: error: 'nbsp' was not declared in this scope
     int i, j, l;
  ^
0_0_22153210_10163.cpp: In function 'int main()':
0_0_22153210_10163.cpp:49:2: error: 'nbsp' was not declared in this scope
     int i, l, r, z, x, y;
  ^