14 lines
196 B
C++
14 lines
196 B
C++
#include<iostream>
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#include<cstdio>
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#include<cmath>
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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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while(true){
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cin>>a>>b>>c;
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d=20-a-b-c;
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printf("他应去捡一个%G公斤重的石头\n",d);
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}
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}
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