32 lines
840 B
C++
32 lines
840 B
C++
#include <iostream>
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#include <cstdio>
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#include <cstring>
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using namespace std;
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double mon,downpay,loan,dep;
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double rate[110];
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int main(){
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// freopen("in","r",stdin);
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while(cin >> mon >> downpay>>loan>>dep&&mon>0){
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memset(rate,0.0,sizeof rate);
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while(dep--){
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int s;
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double ra;
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cin >> s >> ra;
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for(int i = s; i <= 100; i++) rate[i] = ra;
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}
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int ans = 0;
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double aver = loan/mon;
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double nowloan = loan;
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double nowsum = (loan+downpay)*(1-rate[0]);
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while(nowsum < nowloan){
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ans++;
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nowloan -= aver;
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nowsum = nowsum*(1-rate[ans]);
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}
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cout<<ans<<" ";
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if(ans != 1) cout<<"months"<<endl;
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else cout<<"month"<<endl;
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}
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return 0;
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}
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