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 |
┭┮﹏┭┮ |
运行时间 |
0.116 s |
代码语言 |
C++ |
内存使用 |
5.56 MiB |
提交时间 |
2024-07-09 09:41:02 |
显示代码纯文本
#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 1e5+10;
const double eps = 1e-10;
ll read(){
ll x = 0,f = 1;char c = getchar();
for(;c < '0' || c > '9';c = getchar())if(c == '-')f = -1;
for(;c >= '0' && c <= '9';c = getchar())x = (x<<1) + (x<<3) + c-'0';
return x * f;
}
int n;
ll f[N];
double ans[N];
int q[N],l,r,L,R;
int main(){
freopen("balance_beam.in","r",stdin);
freopen("balance_beam.out","w",stdout);
n = read();
for(int i = 1;i <= n;i++)f[i] = read();
l = 1,r = 1;q[1] = 0;
for(int i = 1;i <= n+1;i++){
while(l < r && (f[i] - f[q[r]]) * (q[r] - q[r-1]) >= (f[q[r]] - f[q[r-1]]) * (i - q[r]))r--;
q[++r] = i;
}
L = 1,R = 2;
for(int i = 1;i <= n;i++){
while(R <= r && q[R] < i)R++;
while(L + 1 <= R && q[L+1] <= i)L++;
if(i == q[L] || i == q[R])ans[i] = f[i];
else{
double k = (double)(f[q[R]] - f[q[L]]) / (q[R] - q[L]);
ans[i] = (double)f[q[L]] + k * (double)(i - q[L]) + eps;
}
}
for(int i = 1;i <= n;i++)printf("%lld\n",(long long)(ans[i] * 100000));
return 0;
}