cutii.cpp:4: error: 'mt19937_64' does not name a type cutii.cpp: In function 'long long int val(bool)': cutii.cpp:7: error: 'rnd' was not declared in this scope cutii.cpp: In function 'int bruteforce()': cutii.cpp:31: warning: no return statement in function returning non-void cutii.cpp: In function 'int efficient()': cutii.cpp:37: warning: no return statement in function returning non-void cutii.cpp: In function 'int main()': cutii.cpp:48: error: 'random_device' is not a member of 'std' cutii.cpp:48: error: expected ',' or ';' before '{' token cutii.cpp:48: error: expected primary-expression before ')' token cutii.cpp:49: error: 'rnd' was not declared in this scope