View Compilation Error

0_0_32440985_6564.cpp: In function 'int main()':
0_0_32440985_6564.cpp:96:7: error: redeclaration of 'int u'
   int u, v;
       ^
0_0_32440985_6564.cpp:88:10: note: 'int u' previously declared here
   int n, u, v;
          ^
0_0_32440985_6564.cpp:96:10: error: redeclaration of 'int v'
   int u, v;
          ^
0_0_32440985_6564.cpp:88:13: note: 'int v' previously declared here
   int n, u, v;
             ^