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11 lines
188 B
11 lines
188 B
8 months ago
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#include <bits/stdc++.h>
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using namespace std;
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int main()
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{
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double a,b,c,d;
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cin>>a>>b>>c>>d;
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double res = (abs(d-b))/(abs(a-c));
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printf("%.2f",res);
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return 0;
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}
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//不会
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