View Compilation Error

0_0_37616060_3352.cpp: In function 'int main()':
0_0_37616060_3352.cpp:21:18: error: converting to 'std::tuple<int, int, int>' from initializer list would use explicit constructor 'constexpr std::tuple< <template-parameter-1-1> >::tuple(_UElements&& ...) [with _UElements = {int&, int&, int&}; <template-parameter-2-2> = void; _Elements = {int, int, int}]'
             e[i] = {c, a, b};
                  ^
0_0_37616060_3352.cpp:27:18: error: expected unqualified-id before '[' token
             auto [c, a, b] = e[i];
                  ^
0_0_37616060_3352.cpp:28:26: error: 'a' was not declared in this scope
             int x = find(a), y = find(b);
                          ^
0_0_37616060_3352.cpp:29:21: error: 'y' was not declared in this scope
             if(x != y){
                     ^
0_0_37616060_3352.cpp:32:24: error: 'c' was not declared in this scope
                 ans += c;
                        ^