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为什么我的代码错在哪里啊?、求救#include<iostream> using namespace std; int main() { __int64 a[1001]; a[1]=0;a[2]=1;a[3]=1; int i; for(i=4;i<=1000;i++) { if(i%2==0) a[i]=a[i-1]*2+1; else a[i]=a[i-1]*2-1; } int n; while(cin>>n) { printf("%I64d\n",a[n]); } return 0; } Followed by:
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