View Compilation Error

0_0_37839399_18129.cpp: In function 'void solve()':
0_0_37839399_18129.cpp:54:13: error: expected unqualified-id before '[' token
   for(auto &[x, y] : edge[i]){
             ^
0_0_37839399_18129.cpp:54:13: error: expected ';' before '[' token
0_0_37839399_18129.cpp:54:14: error: 'x' was not declared in this scope
   for(auto &[x, y] : edge[i]){
              ^
0_0_37839399_18129.cpp:54:17: error: 'y' was not declared in this scope
   for(auto &[x, y] : edge[i]){
                 ^
0_0_37839399_18129.cpp: In lambda function:
0_0_37839399_18129.cpp:54:20: error: expected '{' before ':' token
   for(auto &[x, y] : edge[i]){
                    ^
0_0_37839399_18129.cpp: In function 'void solve()':
0_0_37839399_18129.cpp:54:20: error: expected ';' before ':' token
0_0_37839399_18129.cpp:54:20: error: expected primary-expression before ':' token
0_0_37839399_18129.cpp:54:20: error: expected ')' before ':' token
0_0_37839399_18129.cpp:54:20: error: expected primary-expression before ':' token