Compilare: main.cpp:4:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main(){freopen("datorii.in","r",stdin);freopen("datorii.out","w",stdout); ^ main.cpp: In function 'int main()': main.cpp:4:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] main(){freopen("datorii.in","r",stdin);freopen("datorii.out","w",stdout); ^ main.cpp:4:73: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] main(){freopen("datorii.in","r",stdin);freopen("datorii.out","w",stdout); ^ main.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&m); ^ main.cpp:7:46: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;i++)scanf("%d",a+i),b[i/r]+=a[i]; ^ main.cpp:9:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&c,&t,&v); ^