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小暴力求出,,,然后switch。。。#include<iostream> using namespace std; int main() { int n; while(cin>>n) { if(n==0) break; int i,j,num=0,sum=0; for(i=n+1; i<1000000000; i++) { int m=2*n; sum=i; while(m>n) { if((sum%m)<=n&&(sum%m)>0) break; if(sum%m>0) sum=i+sum%m-1; else sum=i; m--; } if(m==n) { cout<<i<<endl; break; } } } return 0; } Followed by:
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