McDonald Thumb, the greatest president ever in the history of the Great Tokitsukaze Kingdom has held his 100th press conference about the global pandemic after making his 1000000th tweets with his smartphone. With a big smile on his face, Mr. Thumb said that nobody knows math more than he does.‘I learn math since I was born and I am very good at it’, said Mr. Thumb. ‘People keep asking me why I know math so much and I sometimes find myself having those amazing ideas about math.’。‘For example?’, asked by a reporter.‘Oh you, I know you! Fake news! You and your agency always produce fake news!’, replied angrily by Mr. Thumb. ‘Let me teach you something, do you know if you add up the squares of numbers from 1 to n, the sum will never be a square number?’。As another reporter in that press conference, you also wondering that given n, whether. is a square number. Specifically, we regard a positive number x as a square number when there exists an integer y satisfying
McDonald Thumb, the greatest president ever in the history of the Great Tokitsukaze Kingdom has held his 100th press conference about the global pandemic after making his 1000000th tweets with his smartphone. With a big smile on his face, Mr. Thumb said that nobody knows math more than he does. ‘I learn math since I was born and I am very good at it’, said Mr. Thumb. ‘People keep asking me why I know math so much and I sometimes find myself having those amazing ideas about math.’ ‘For example?’, asked by a reporter. ‘Oh you, I know you! Fake news! You and your agency always produce fake news!’, replied angrily by Mr. Thumb. ‘Let me teach you something, do you know if you add up the squares of numbers from 1 to n, the sum will never be a square number?’ As another reporter in that press conference, you also wondering that given n, whether sum_{k=1}^{n}k^2 ∑ k=1 n k 2 is a square number. Specifically, we regard a positive number x as a square number when there exists an integer y satisfying y^2=x y 2 =x.
