1065 A+B and C (64bit) （20 分）溢出判定

题目 Given three integers A, B and C in [ − 2 63 , 2 63 ] [−2^{63},2^{63}] [−263,263], you are supposed to tell whether A + B > C A+B>C A+B>C. Input Specification: The first line of the input give

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