View Compilation Error

0_0_35933767_11173.cpp: In function 'int main()':
0_0_35933767_11173.cpp:82:11: error: 'u' was not declared in this scope
   for(i=0,u,v,d,b;i<m;i++){
           ^
0_0_35933767_11173.cpp:82:13: error: 'v' was not declared in this scope
   for(i=0,u,v,d,b;i<m;i++){
             ^
0_0_35933767_11173.cpp:82:15: error: 'd' was not declared in this scope
   for(i=0,u,v,d,b;i<m;i++){
               ^
0_0_35933767_11173.cpp:82:17: error: 'b' was not declared in this scope
   for(i=0,u,v,d,b;i<m;i++){
                 ^