View Compilation Error

0_0_37938550_14343.cpp: In function 'void solve()':
0_0_37938550_14343.cpp:11:12: error: expected unqualified-id before '[' token
  for (auto [c, x] : cnt)
            ^
0_0_37938550_14343.cpp:11:12: error: expected ';' before '[' token
0_0_37938550_14343.cpp:11:13: error: 'c' was not declared in this scope
  for (auto [c, x] : cnt)
             ^
0_0_37938550_14343.cpp:11:16: error: 'x' was not declared in this scope
  for (auto [c, x] : cnt)
                ^
0_0_37938550_14343.cpp: In lambda function:
0_0_37938550_14343.cpp:11:19: error: expected '{' before ':' token
  for (auto [c, x] : cnt)
                   ^
0_0_37938550_14343.cpp: In function 'void solve()':
0_0_37938550_14343.cpp:11:19: error: expected ';' before ':' token
0_0_37938550_14343.cpp:11:19: error: expected primary-expression before ':' token
0_0_37938550_14343.cpp:11:19: error: expected ')' before ':' token
0_0_37938550_14343.cpp:11:19: error: expected primary-expression before ':' token