Eroare de compilare: user.cpp: In function ‘void solve()’: user.cpp:50:23: error: converting to ‘std::set<std::tuple<int, int, long long int> >::value_type {aka std::tuple<int, int, long long 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, long long int}]’ S.insert({0, a, a}); ^ user.cpp:68:78: error: converting to ‘std::set<std::tuple<int, int, long long int> >::value_type {aka std::tuple<int, int, long long int>}’ from initializer list would use explicit constructor ‘constexpr std::tuple< <template-parameter-1-1> >::tuple(_UElements&& ...) [with _UElements = {long long int&, int&, int&}; <template-parameter-2-2> = void; _Elements = {int, int, long long int}]’ d[G[x][i].x]=d[x]+G[x][i].y, S.insert({d[G[x][i].x], from, G[x][i].x}), fr[G[x][i].x] = from; ^ user.cpp: In function ‘int main()’: user.cpp:83:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("catun.in", "rt", stdin); ^ user.cpp:84:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("catun.out", "wt", stdout); ^