Compilare: main.cpp: In function 'void set_onion(long long int)': main.cpp:33:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 33 | for (auto [y,c]:v[x]){ | ^ main.cpp: At global scope: main.cpp:40:11: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts' 40 | void merj(auto &a, auto b, int c){ | ^~~~ main.cpp:40:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts' 40 | void merj(auto &a, auto b, int c){ | ^~~~ main.cpp: In function 'void merj(auto:1&, auto:2, long long int)': main.cpp:41:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 41 | auto &[amx1, amx2]=a; | ^ main.cpp:42:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 42 | auto [bmx1, bmx2]=b; | ^ main.cpp: In function 'void find_maxs(long long int)': main.cpp:54:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 54 | for (auto [y,c]:v[x]){ | ^ main.cpp: In function 'void find_maxs2(long long int)': main.cpp:64:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 64 | for (auto [y,c]:v[x]){ | ^ main.cpp:66:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 66 | auto &[d,u]=mx[y]; | ^ main.cpp:67:12: warning: unused variable 'w' [-Wunused-variable] 67 | ll w=0; | ^ main.cpp: In function 'void du(long long int, long long int, long long int, long long int)': main.cpp:77:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 77 | auto [d,u]=mx[y]; | ^ main.cpp: In function 'void solve(long long int)': main.cpp:120:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 120 | for (auto [y,c]:v[x]){ | ^ main.cpp: At global scope: main.cpp:128:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 128 | main(){ios_base::sync_with_stdio(false), cin.tie(0); | ^~~~ main.cpp: In function 'int main()': main.cpp:143:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 143 | for (auto [dist,y]:V[0]){ s[0].insert({dist, y}); mp[y]=dist; max_sum+=dist; /*cout<<y<<"_"<<dist<<endl;*/ } | ^ main.cpp:144:22: warning: comparison of integer expressions of different signedness: 'std::set<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare] 144 | while(s[0].size()!=k){ s[1].insert(*s[0].begin()); max_sum-=(*s[0].begin()).F; s[0].erase(s[0].begin()); }