View Compilation Error

0_0_36657338_22431.cpp: In function 'void solve()':
0_0_36657338_22431.cpp:99:11: error: expected unqualified-id before '[' token
  for(auto [x, y] : v[n][n]){
           ^
0_0_36657338_22431.cpp:99:11: error: expected ';' before '[' token
0_0_36657338_22431.cpp:99:12: error: 'x' was not declared in this scope
  for(auto [x, y] : v[n][n]){
            ^
0_0_36657338_22431.cpp:99:15: error: 'y' was not declared in this scope
  for(auto [x, y] : v[n][n]){
               ^
0_0_36657338_22431.cpp: In lambda function:
0_0_36657338_22431.cpp:99:18: error: expected '{' before ':' token
  for(auto [x, y] : v[n][n]){
                  ^
0_0_36657338_22431.cpp: In function 'void solve()':
0_0_36657338_22431.cpp:99:18: error: expected ';' before ':' token
0_0_36657338_22431.cpp:99:18: error: expected primary-expression before ':' token
0_0_36657338_22431.cpp:99:18: error: expected ')' before ':' token
0_0_36657338_22431.cpp:99:18: error: expected primary-expression before ':' token