AtCoder Regular Contest 126
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Problem Statement
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We have $N_2$ sticks of length $2$ each, $N_3$ sticks of length $3$ each, and $N_4$ sticks of length $4$ each. You can do the following operation any number of times.
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- Choose two sticks.
- Let
$x$and$y$be the lengths of these sticks. Bond them to form a stick of length$x+y$.
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Find the maximum number of sticks that can be made whose lengths are exactly $10$.
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Given $T$ test cases, solve each of them.
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Constraints
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$1\leq T\leq 100$$0\leq N_2, N_3, N_4\leq 10^{15}$
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Input
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Input is given from Standard Input in the following format:
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T
\text{case}_1
\text{case}_2
\vdots
\text{case}_T
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Each case is in the following format:
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N_2 N_3 N_4
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Output
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Print $T$ lines; the $i$-th line should contain the answer for $\text{case}_i$.
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样例
Input #1
5
3 4 1
7 0 0
0 0 7
0 0 0
1000000000000000 1000000000000000 1000000000000000
Output #1
2
1
0
0
900000000000000
Let us describe the first case. We have three sticks of length $2$, four sticks of length $3$, and one stick of length $4$.
One way to make two sticks of length exactly $10$ is as follows.
- Bond four sticks of length $2$, $2$, $3$, $3$ in some order to make one stick of length $10$.
- Bond three sticks of length $3$, $3$, $4$ in some order to make one stick of length $10$.
- Now we have three sticks of length $2$, $10$, $10$.
题目信息
题面与样例版权归 AtCoder 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。