View Compilation Error

0_0_38241728_20014.cpp: In function 'void solve()':
0_0_38241728_20014.cpp:23:20: error: expected unqualified-id before '[' token
     for(const auto&[l,r]:v){
                    ^
0_0_38241728_20014.cpp:23:20: error: expected ';' before '[' token
0_0_38241728_20014.cpp:23:21: error: 'l' was not declared in this scope
     for(const auto&[l,r]:v){
                     ^
0_0_38241728_20014.cpp:23:23: error: 'r' was not declared in this scope
     for(const auto&[l,r]:v){
                       ^
0_0_38241728_20014.cpp: In lambda function:
0_0_38241728_20014.cpp:23:25: error: expected '{' before ':' token
     for(const auto&[l,r]:v){
                         ^
0_0_38241728_20014.cpp: In function 'void solve()':
0_0_38241728_20014.cpp:23:25: error: expected ';' before ':' token
0_0_38241728_20014.cpp:23:25: error: expected primary-expression before ':' token
0_0_38241728_20014.cpp:23:25: error: expected ')' before ':' token
0_0_38241728_20014.cpp:23:25: error: expected primary-expression before ':' token