View Compilation Error

0_0_37746356_12260.cpp: In function 'void solve()':
0_0_37746356_12260.cpp:189:11: error: redeclaration of 'int x'
       int x = lca(1, x, 0);
           ^
0_0_37746356_12260.cpp:187:14: note: 'int x' previously declared here
     for (int x, i = 1; i <= a; i++) {
              ^
0_0_37746356_12260.cpp:193:11: error: redeclaration of 'int x'
       int x = lca(1, x, 1);
           ^
0_0_37746356_12260.cpp:191:21: note: 'int x' previously declared here
     for (int i = 1, x; i <= b; i++) {
                     ^