Problem authors

Problem Source	Problems	Average Difficulty
Piotr Rudnicki	20	4.3Medium
Piotr Zielinski	1	6.8Hard
Porter Scobey	2	2.4Easy
Prabhakar Ragde	2	4.2Medium
Prabhvir Babra	1	7.6Hard
Programmeringsolympiaden	1	1.9Easy
Pär Söderhjelm	4	4.2Medium
Pål G. Drange	4	6.3Hard
Pål Grønås Drange	11	4.1Medium
Pétur Ólafur Aðalgeirsson	2	1.3Easy
R. Marshall	2	3Medium
Rachel Krohn	2	6.9Hard
Ragnar Groot Koerkamp	44	5.1Medium
Ragnar Nevries	1	8Hard
Rama Aryasuta Pangestu	24	6.4Hard
Ranald Lam Yun Shao	2	7.7Hard
Raphaël Marinier	2	6.2Hard
Rasmus Hulthe	2	2.5Easy
Rasmus Pagh	1	5.7Hard
Raunak Redkar	2	3.1Medium
Raymond Kang Seng Ing	1	6.2Hard
Raymond van Bommel	10	5Medium
Reece Yankey	1	5.9Hard
Reinier Schmiermann	15	5.6Hard
Reiya Downs	2	2.6Easy
Richard Peng	5	4.9Medium
Rikard Lundmark	1	4.9Medium
Rishi Sankar	6	6.3Hard
Robert Hochberg	10	4.8Medium
Robert McGorman	1	2.3Easy
Robert Pilgrim	1	2.4Easy
Robin Christopher Yu	49	7.2Hard
Robin Lee	23	5Medium
Roger Henriksson	1	3.9Medium
Rohit Nema	2	3.5Medium
Roland Tyler Killian	1	4.4Medium
Ron Pacheco	3	5Medium
Rongqi Qiu	2	7.3Hard
Ruben Brokkelkamp	2	5.6Hard
Rudy Matela	1	1.8Easy
Rudy van Vliet	1	5.6Hard
Rujia Liu	5	4.2Medium
Ruth Risberg	2	3.2Medium
Ryan Farrell	5	3.3Medium
Ryan Henning	2	5.4Medium
Ryan Manley	1	4.2Medium
Ryan Mapes	4	2.9Medium
Ryan Marshall	5	3.6Medium
Ryan Rose	1	3.4Medium
Ryan Tjoa	1	5Medium
Rúnar Vestmann	1	1.9Easy
S. Teikn Smith	1	3.1Medium
Saarthak Sharma	1	5.7Hard
Saketh Are	1	5.3Medium
Sam Sartor	4	3.7Medium
Samuel Furman	3	3.6Medium
Samuel Tardieu	1	5.8Hard
Samúel Arnar Hafsteinsson	15	2.6Easy
Sander Alewijnse	1	9.3Hard
Sander Land	1	7Hard
Sandra Schumann	1	6.5Hard
Sandro Esquivel	1	6.2Hard
Sara Dögg Sigurðardóttir	1	4.1Medium
Sarthak Shrivastava	1	6.8Hard
Scott Batemen	1	2.5Easy
Scott Enriquez	1	2.4Easy
Scott McGowan	1	3.9Medium
Sean McCulloch	3	6.8Hard
Sebastian Angrick	1	4.9Medium
Serikzhan Kazi	2	5.9Hard
Serikzhan S. Kazi	1	2.5Easy
Shafaet Ashraf	1	9.3Hard
Shaheed Ebrahim	1	2.9Medium
Shahriar Manzoor	1	5.8Hard
Shang-En Huang	1	5.9Hard
Shantanu Modak	3	4.2Medium
Shardul Dhongade	1	4.3Medium
Shiplu Hawlader	1	4.9Medium
Shubham Kumar	2	6Hard
Sidhant Bansal	2	3.6Medium
Sidney Cadot	1	2.8Medium
Sigurður Helgason	1	1.9Easy
Sigurður Jens Albertsson	5	4.5Medium
Silviu Maniu	2	3.7Medium
Simanta Mitra	1	4.7Medium
Simen Hornnes	3	6.4Hard
Simon Klein	1	6.1Hard
Simon Lindholm	33	6.9Hard
Sondre Sortland	4	5.9Hard
Sonny Chan	6	5Medium
Spencer Pao	1	1.8Easy
Sri Vangaru	1	5.6Hard
Stefan Büttcher	3	4.8Medium
Stefan Kraus	1	3.2Medium
Stefan Pszczolkowski	1	2.1Easy
Stefan Toman	1	2Easy
Stein Norheim	7	5.7Hard
Steph Cheng	1	7.5Hard
Sterling Larson	1	4.5Medium
Sterling Smith	1	2Easy

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