View Compilation Error

0_0_36365718_26500.cpp: In function 'void solve()':
0_0_36365718_26500.cpp:36:18: 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}]'
         white[i] = {c, u, v};
                  ^
0_0_36365718_26500.cpp:37:18: 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}]'
         black[i] = {d, u, v};
                  ^