View Compilation Error

0_0_36480269_1792.cpp: In function 'bool sol()':
0_0_36480269_1792.cpp:189:23: error: expected unqualified-id before '[' token
             for (auto [u, c] : v)
                       ^
0_0_36480269_1792.cpp:189:23: error: expected ';' before '[' token
0_0_36480269_1792.cpp:189:24: error: 'u' was not declared in this scope
             for (auto [u, c] : v)
                        ^
0_0_36480269_1792.cpp:189:27: error: 'c' was not declared in this scope
             for (auto [u, c] : v)
                           ^
0_0_36480269_1792.cpp: In lambda function:
0_0_36480269_1792.cpp:189:30: error: expected '{' before ':' token
             for (auto [u, c] : v)
                              ^
0_0_36480269_1792.cpp: In function 'bool sol()':
0_0_36480269_1792.cpp:189:30: error: expected ';' before ':' token
0_0_36480269_1792.cpp:189:30: error: expected primary-expression before ':' token
0_0_36480269_1792.cpp:189:30: error: expected ')' before ':' token
0_0_36480269_1792.cpp:189:30: error: expected primary-expression before ':' token