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Commit 875d2be

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atcoder-live

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add range sum to BIT

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bit.cpp

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`‎bit.cpp‎`

Lines changed: 3 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -17,4 +17,7 @@ struct BIT {`
`17`	`17`	`}`
`18`	`18`	`return x;`
`19`	`19`	`}`
	`20`	`+ T sum(int l, int r) {`
	`21`	`+ return sum(r-1) - sum(l-1);`
	`22`	`+ }`
`20`	`23`	`};`

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