Compilare: main.cpp: In function 'void Alice()': main.cpp:67:9: warning: unused variable 'res' [-Wunused-variable] int res=0; ^~~ main.cpp: In function 'int main()': main.cpp:219:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("game4.in","r",stdin); ^ main.cpp:221:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("game4.out","w",stdout); ^ main.cpp:223:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&t,&cer); ^ main.cpp:265:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:271:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ main.cpp: In function 'int S(int)': main.cpp:59:1: warning: control reaches end of non-void function [-Wreturn-type] } ^