View Compilation Error

0_0_35062785_6731.cpp: In function 'int main()':
0_0_35062785_6731.cpp:26:10: error: 'b' was not declared in this scope
    b1[i]=b[1][i]/m;
          ^
0_0_35062785_6731.cpp:37:10: error: 'b' was not declared in this scope
    b2[i]=b[2][i]*1.0/n;
          ^
0_0_35062785_6731.cpp:48:16: error: 'sum2' was not declared in this scope
    if(a[i][j]>=sum2[i])
                ^