26 lines
479 B
Java
26 lines
479 B
Java
package chelper;
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import io.InputReader;
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import io.OutputWriter;
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import solutions.ChelperSolution;
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public class TaskB extends ChelperSolution {
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@Override
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public void solve(int testNumber, InputReader in, OutputWriter out) {
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super.solve(testNumber, in, out);
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}
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@Override
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public void solve(int testNumber) {
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int n = in.nextInt();
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int k = in.nextInt() - 1;
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int l = k;
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int r = n - l - 1;
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out.println(n + Math.min(l, r) + n - 1 + n + 1);
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}
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}
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