View Compilation Error

0_0_38511191_22636.cpp: In function 'void solve()':
0_0_38511191_22636.cpp:36:12: error: expected unqualified-id before '[' token
   for(auto [a,b] : v)
            ^
0_0_38511191_22636.cpp:36:12: error: expected ';' before '[' token
0_0_38511191_22636.cpp:36:13: error: 'a' was not declared in this scope
   for(auto [a,b] : v)
             ^
0_0_38511191_22636.cpp:36:15: error: 'b' was not declared in this scope
   for(auto [a,b] : v)
               ^
0_0_38511191_22636.cpp: In lambda function:
0_0_38511191_22636.cpp:36:18: error: expected '{' before ':' token
   for(auto [a,b] : v)
                  ^
0_0_38511191_22636.cpp: In function 'void solve()':
0_0_38511191_22636.cpp:36:18: error: expected ';' before ':' token
0_0_38511191_22636.cpp:36:18: error: expected primary-expression before ':' token
0_0_38511191_22636.cpp:36:18: error: expected ')' before ':' token
0_0_38511191_22636.cpp:36:18: error: expected primary-expression before ':' token