比赛 |
2024暑假C班集训9 |
评测结果 |
AAAAAAAAAAA |
题目名称 |
(USACO Dec18)平衡木 |
最终得分 |
100 |
用户昵称 |
darkMoon |
运行时间 |
0.166 s |
代码语言 |
C++ |
内存使用 |
6.39 MiB |
提交时间 |
2024-07-09 10:32:52 |
显示代码纯文本
#include<bits/stdc++.h>
#define int long long
#define fi first
#define se second
#define mp make_pair
using namespace std;
auto mread = [](){
int x;
scanf("%lld", &x);
return x;
};
const int N = 1e5 + 5;
const double eps = 1e-10;
int n, a[N], e[N], l[N], r[N];
deque<pair<int, int> > q;
int mato(int x_1, int y_1, int x_2, int y_2, int x_3, int y_3){
return (y_3 - y_2) * (x_2 - x_1) >= (y_2 - y_1) * (x_3 - x_2);
}
signed main(){
freopen("balance_beam.in", "r", stdin);
freopen("balance_beam.out", "w", stdout);
n = mread();
for(int i = 1; i <= n; i ++){
a[i] = mread();
}
q.push_back(mp(0, 0));
e[0] = e[n + 1] = 1;
for(int i = 1; i <= n; i ++){
while(q.size() >= 2){
int t = q.size() - 1;
if(mato(q[t - 1].fi, q[t - 1].se, q[t].fi, q[t].se, i, a[i])){
e[q[t].fi] = 0;
q.pop_back();
}
else{
break;
}
}
e[i] = 1;
q.push_back(mp(i, a[i]));
}
int la = 0;
for(int i = 1; i <= n; i ++){
if(e[i])
la = i;
l[i] = la;
}
q.push_back(mp(n + 1, 0));
la = n + 1;
for(int i = n; i >= 1; i --){
if(e[i])
la = i;
r[i] = la;
}
for(int i = 1; i <= n; i ++){
// printf("*** %lld %lld %lld\n", i, l[i], r[i]);
if(e[i]){
printf("%lld\n", a[i] * 100000);
}
else{
printf("%lld\n", (int)((double)((double)a[l[i]] + (double)(a[r[i]] - a[l[i]]) / (double)(r[i] - l[i]) * (double)(i - l[i]) + eps) * 100000.0));
}
}
return 0;
}