View Compilation Error

0_0_37731787_20633.cpp: In function 'void solve()':
0_0_37731787_20633.cpp:103:18: error: expected unqualified-id before '[' token
         for(auto [l,r]:A){
                  ^
0_0_37731787_20633.cpp:103:18: error: expected ';' before '[' token
0_0_37731787_20633.cpp:103:19: error: 'l' was not declared in this scope
         for(auto [l,r]:A){
                   ^
0_0_37731787_20633.cpp:103:21: error: 'r' was not declared in this scope
         for(auto [l,r]:A){
                     ^
0_0_37731787_20633.cpp: In lambda function:
0_0_37731787_20633.cpp:103:23: error: expected '{' before ':' token
         for(auto [l,r]:A){
                       ^
0_0_37731787_20633.cpp: In function 'void solve()':
0_0_37731787_20633.cpp:103:23: error: expected ';' before ':' token
0_0_37731787_20633.cpp:103:23: error: expected primary-expression before ':' token
0_0_37731787_20633.cpp:103:23: error: expected ')' before ':' token
0_0_37731787_20633.cpp:103:23: error: expected primary-expression before ':' token