【PAT甲级】1106 Lowest Price in Supply Chain (25分)
题意:
输入一个正整数N(<=1e5),两个小数P和R,分别表示树的结点个数和商品原价以及每下探一层会涨幅的百分比。输出叶子结点深度最小的商品价格和深度最小的叶子结点个数。
trick:
测试点1只有根节点一个点,输出P和1。
AAAAAccepted code:
#define HAVE_STRUCT_TIMESPEC
#include<bits/stdc++.h>
using namespace std;
vector<int>v[];
int store[];
void dfs(int x,int y){
if(v[x].size()==)
store[x]=y;
for(auto it:v[x]){
dfs(it,y+);
}
}
int main(){
ios::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
int n;
cin>>n;
double p,r;
cin>>p>>r;
for(int i=;i<n;++i){
int x;
cin>>x;
for(int j=;j<=x;++j){
int y;
cin>>y;
v[i].push_back(y);
}
}
dfs(,);
int mn=1e9;
for(int i=;i<n;++i)
if(store[i])
mn=min(mn,store[i]);
int num=;
if(mn==1e9)
mn=;
for(int i=;i<n;++i)
if(store[i]==mn)
++num;
double ans=pow(1.0+r/,mn);
ans*=p;
printf("%.4lf %d",ans,num);
return ;
}
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