Compilare: main.cpp: In function 'int main()': main.cpp:16:11: warning: unused variable 'j' [-Wunused-variable] int i,j; ^ main.cpp:17:15: warning: unused variable 's' [-Wunused-variable] long long s=0,x,k; ^ main.cpp:17:19: warning: unused variable 'x' [-Wunused-variable] long long s=0,x,k; ^ main.cpp:17:21: warning: unused variable 'k' [-Wunused-variable] long long s=0,x,k; ^ main.cpp:14:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("lumanari.in","r",stdin); ^ main.cpp:15:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("lumanari.out","w",stdout); ^ main.cpp:18:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:20:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^