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https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
30 lines
508 B
C++
30 lines
508 B
C++
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#include<cstdio>
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int main()
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{
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int n;
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int a1,a2,a3;
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int ans;
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while(~scanf("%d%d%d%d",&n,&a1,&a2,&a3))
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{
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if(n==0 && a1==0 && a2==0 && a3==0)
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break;
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ans = 4*n-1;
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if(a2>a1)
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{
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ans+=a2-a1;
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}
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else
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{
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ans+=n+a2-a1;
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}
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if(a3<a2)
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{
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ans+=a2-a3;
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}
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else
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ans+=n+a2-a3;
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printf("%d\n",ans);
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}
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return 0;
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}
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