geppetto.cpp: In function 'int main()':
geppetto.cpp:13:19: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
13 | for(register int i = 1, u, v; i <= m; ++i){
| ^
geppetto.cpp:13:26: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
13 | for(register int i = 1, u, v; i <= m; ++i){
| ^
geppetto.cpp:13:29: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
13 | for(register int i = 1, u, v; i <= m; ++i){
| ^
geppetto.cpp:17:19: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
17 | for(register int mask = 0; mask < (1 << n); ++mask){
| ^~~~
geppetto.cpp:19:20: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
19 | for(register int i = 1; i <= n; ++i){
| ^
geppetto.cpp:24:20: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
24 | for(register int i = 0; i < (int)tmp.size(); ++i){
| ^
geppetto.cpp:25:21: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
25 | for(register int j = i + 1; j < (int)tmp.size(); ++j){
| ^