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ACM ICPC 2018 World Finals

unsigned long long int 加位运算,直接就过了

Posted by witstorm at 2018-01-09 12:15:37 on Problem 1023
感觉这题就是把数做了个映射,比如
ppnn 要求10的映射

上限是12,下限是-3
10+3=13(1101)
1101和0011按位异或得1110

所以容易写了

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