Compilare: main.cpp: In function 'bool solve()': main.cpp:46:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 46 | auto &[x,y]=last[i]; | ^ main.cpp:109:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 109 | auto [mx,x]=last[i]; | ^ main.cpp:110:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 110 | auto [my,y]=last[i+1]; | ^ main.cpp: At global scope: main.cpp:143:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 143 | main() | ^~~~ main.cpp: In function 'int main()': main.cpp:145:10: warning: variable 'sol' set but not used [-Wunused-but-set-variable] 145 | auto sol=[](bool x)->string | ^~~