Compilare: main.cpp: In function 'void h_adun(int*, long long int)': main.cpp:24:11: warning: unused variable 'tr' [-Wunused-variable] int i,tr; ^~ main.cpp: In function 'int main()': main.cpp:46:9: warning: unused variable 'n' [-Wunused-variable] int n,i,cnt=0; ^ main.cpp:46:11: warning: unused variable 'i' [-Wunused-variable] int n,i,cnt=0; ^ main.cpp:46:13: warning: unused variable 'cnt' [-Wunused-variable] int n,i,cnt=0; ^~~ main.cpp:43:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("next.in","r",stdin); ^ main.cpp:44:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("next.out","w",stdout); ^ main.cpp:54:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&k); ^