View Compilation Error

0_0_37635460_28248.cpp: In function 'int main()':
0_0_37635460_28248.cpp:176:9: error: expected unqualified-id before '[' token
    auto [u, v, w] = edge[i];
         ^
0_0_37635460_28248.cpp:177:8: error: 'w' was not declared in this scope
    if (w == 0) {
        ^
0_0_37635460_28248.cpp:178:11: error: 'u' was not declared in this scope
     G.set(u, v, I(deg[u]).inv());
           ^
0_0_37635460_28248.cpp:178:14: error: 'v' was not declared in this scope
     G.set(u, v, I(deg[u]).inv());
              ^
0_0_37635460_28248.cpp:183:11: error: 'u' was not declared in this scope
     G.set(u, v + n, I(deg[u]).inv());
           ^
0_0_37635460_28248.cpp:183:14: error: 'v' was not declared in this scope
     G.set(u, v + n, I(deg[u]).inv());
              ^