As the title, `1e18 + 1 == 1e18` in C++.↵
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This is because the double type stores the first 53 binary bits of a number. So the number 1 will be ignored.↵
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And most of submissions which fst on test 13 of problem C of edu round 187 are for this reason.
↵
This is because the double type stores the first 53 binary bits of a number. So the number 1 will be ignored.↵
↵
And most of submissions which fst on test 13 of problem C of edu round 187 are for this reason.



