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注意要按照案例输出格式来输出
#include <bits/stdc++.h>
using namespace std;
int main(){
double price = 0, discount = 0, pay = 0;
while (cin >> price) {
if (price >= 5000) {
discount = 0.8;
}
else if (price >=3000) {
discount = 0.85;
}
else if (price >=2000) {
discount = 0.9;
}
else if (price >=1000) {
discount = 0.95;
}
else {
...
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