29 lines
560 B
C++
29 lines
560 B
C++
#include<iostream>
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using namespace std;
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int main()
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{
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int h,u,d,f;
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while(cin>>h>>u>>d>>f&&h!=0)
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{
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int i=1;
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double sum=0;
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while(i)
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{
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sum+=u-u*(i-1)*double(f)/100;
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if(sum>h)
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{
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cout<<"success on day "<<i<<endl;
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break;
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}
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sum-=d;
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if(sum<0)
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{
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cout<<"failure on day "<<i<<endl;
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break;
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}
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i++;
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}
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}
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return 0;
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}
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