22 lines
295 B
C++
22 lines
295 B
C++
#include<cstdio>
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int n,D,p,L,v,kase;
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double res;
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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%d",&n,&D)==2&&D)
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{
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res=0;
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while(n--)
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{
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scanf("%d%d%d",&p,&L,&v);
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D-=L;
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res+=2.0*L/v;
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}
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printf("Case %d: %.3lf\n\n",++kase,res+D);
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}
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return 0;
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}
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