Who's film "Le Monde du silence" won the Palme d'Or in 1956 and the Academy Award for Best Documentary in 1957, Louis Malle or  Arne Sucksdorff?
Louis Malle Louis Marie Malle (] ; 30 October 1932 – 23 November 1995) was a French film director, screenwriter, and producer. His film "Le Monde du silence" won the Palme d'Or in 1956 and the Academy Award for Best Documentary in 1957, although he was not credited at the ceremony with the award instead being presented to the film's co-director Jacques Cousteau. Later in his career he was nominated multiple times for Academy Awards. Malle is also one of the few directors to have won the Golden Lion multiple times.
Alain Resnais Alain Resnais (] ; 3 June 19221 March 2014) was a French film director and screenwriter whose career extended over more than six decades. After training as a film editor in the mid-1940s, he went on to direct a number of short films which included "Night and Fog" (1955), an influential documentary about the Nazi concentration camps.