View Compilation Error

0_0_37708354_6704.cpp: In function 'int solve()':
0_0_37708354_6704.cpp:127:15: error: expected unqualified-id before '[' token
     for (auto [aa, bb] : v)
               ^
0_0_37708354_6704.cpp:127:15: error: expected ';' before '[' token
0_0_37708354_6704.cpp:127:16: error: 'aa' was not declared in this scope
     for (auto [aa, bb] : v)
                ^
0_0_37708354_6704.cpp:127:20: error: 'bb' was not declared in this scope
     for (auto [aa, bb] : v)
                    ^
0_0_37708354_6704.cpp: In lambda function:
0_0_37708354_6704.cpp:127:24: error: expected '{' before ':' token
     for (auto [aa, bb] : v)
                        ^
0_0_37708354_6704.cpp: In function 'int solve()':
0_0_37708354_6704.cpp:127:24: error: expected ';' before ':' token
0_0_37708354_6704.cpp:127:24: error: expected primary-expression before ':' token
0_0_37708354_6704.cpp:127:24: error: expected ')' before ':' token
0_0_37708354_6704.cpp:127:24: error: expected primary-expression before ':' token