Redirecting to <a href="https://s3.hydro.ac/hydro/problem/ccf/100/additional_file/centroid3.in?X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Credential=hydro%2F20250407%2FAuto%2Fs3%2Faws4_request&amp;X-Amz-Date=20250407T062053Z&amp;X-Amz-Expires=1800&amp;X-Amz-Signature=c3ad7e93f9593152caf99ffbc865e37121eefc65338c05b3f34b8159d21c4bae&amp;X-Amz-SignedHeaders=host&amp;response-content-disposition=attachment%3B%20filename%3D%22centroid3.in%22&amp;x-id=GetObject">https://s3.hydro.ac/hydro/problem/ccf/100/additional_file/centroid3.in?X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Credential=hydro%2F20250407%2FAuto%2Fs3%2Faws4_request&amp;X-Amz-Date=20250407T062053Z&amp;X-Amz-Expires=1800&amp;X-Amz-Signature=c3ad7e93f9593152caf99ffbc865e37121eefc65338c05b3f34b8159d21c4bae&amp;X-Amz-SignedHeaders=host&amp;response-content-disposition=attachment%3B%20filename%3D%22centroid3.in%22&amp;x-id=GetObject</a>.