24 lines
373 B
C++
24 lines
373 B
C++
#include<cstdio>
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int k;
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int res[20005];
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void solve()
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{
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int cnt=0;
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for(int y=k+1;y<=2*k;y++)
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{
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int x=k*y/(y-k);
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if(x*y==k*y+k*x) res[cnt++]=y;
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}
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printf("%d\n",cnt);
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for(int i=0;i<cnt;i++)
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printf("1/%d = 1/%d + 1/%d\n",k,k*res[i]/(res[i]-k),res[i]);
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}
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int main()
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{
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#ifdef local
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freopen("pro.in","r",stdin);
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#endif
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while(scanf("%d",&k)==1) solve();
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return 0;
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}
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