View Compilation Error

0_0_37841540_7950.cpp: In function 'void solve()':
0_0_37841540_7950.cpp:50:12: error: expected unqualified-id before '[' token
   for(auto [u,v]:G[i])
            ^
0_0_37841540_7950.cpp:50:12: error: expected ';' before '[' token
0_0_37841540_7950.cpp:50:13: error: 'u' was not declared in this scope
   for(auto [u,v]:G[i])
             ^
0_0_37841540_7950.cpp:50:15: error: 'v' was not declared in this scope
   for(auto [u,v]:G[i])
               ^
0_0_37841540_7950.cpp: In lambda function:
0_0_37841540_7950.cpp:50:17: error: expected '{' before ':' token
   for(auto [u,v]:G[i])
                 ^
0_0_37841540_7950.cpp: In function 'void solve()':
0_0_37841540_7950.cpp:50:17: error: expected ';' before ':' token
0_0_37841540_7950.cpp:50:17: error: expected primary-expression before ':' token
0_0_37841540_7950.cpp:50:17: error: expected ')' before ':' token
0_0_37841540_7950.cpp:50:17: error: expected primary-expression before ':' token