HEU 6000 The 3n + 1 problem
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/**************************************
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Problem: HEU 6000 The 3n + 1 problem
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Time: 0.0120 s
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Memory: 236 k
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Accepted Time: 2009-04-02 13:54:11
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Tips: 第一个数有可能比第二个大。
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**************************************/
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#include <stdio.h>
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int main()
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{
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long a,b;
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while(scanf("%ld%ld",&a,&b)!=EOF)
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{
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long i,j,max=0;
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long aa=a<b?a:b;
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long bb=a>b?a:b;
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for(i=aa;i<=bb;i++)
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{
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long sum=1,temp=i;
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while(temp!=1)
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{
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if(temp%2==1)temp=3*temp+1;
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else temp/=2;
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sum++;
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}
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if(sum>max)max=sum;
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}
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printf("%ld %ld %ld\n",a,b,max);
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}
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return 0;
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}
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