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24 lines
547 B
C++
24 lines
547 B
C++
#include <cstdio>
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#include <utility>
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#include <algorithm>
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using namespace std;
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const int N=10005;
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pair<int,int> a[N];
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int main()
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{
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int T,n,t=0;
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scanf("%d",&T);
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while(T--)
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{
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scanf("%d",&n);
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for(int i=0; i<n; i++)
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scanf("%d%d",&a[i].first,&a[i].second);
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sort(a,a+n);
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double ans=0;
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for(int i=1; i<n; i++)
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ans=max(ans,1.0*abs(a[i].second-a[i-1].second)/(a[i].first-a[i-1].first));
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printf("Case #%d: %.2lf\n",++t,ans);
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}
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return 0;
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}
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