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ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#694434 | #7075. Let's Play Jigsaw Puzzles! | ucup-team4352# | WA | 0ms | 3668kb | C++23 | 1.8kb | 2024-10-31 17:56:28 | 2024-10-31 17:56:29 |
Judging History
answer
#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define lowbit(x) (x&-x)
#define log(x) (31^__builtin_clz(x))
using namespace std;
const int maxn=1e4+5;
int a[maxn];
vector<int>dp[maxn];
vector<int>ans[maxn];
vector<short>loc[maxn];
int n;
int now[maxn];
short find(int x,int y,int nx,int ny){
short l=y+1,r=n+1;
while(l<r){
short mid=l+r-1>>1;
if(ans[x+1][mid-(x+1)]+nx>ans[y+1][mid-(y+1)]+ny)l=mid+1;
else r=mid;
}
return l;
}
void solve(){
n=5e3;
cin>>n;
for(int i=1;i<=n;i++){
a[i]=i;
cin>>a[i];
dp[i].resize(i+1);
}
for(int i=1;i<=n;i++){
int mn=a[i],mx=a[i];
for(int j=i;j<=n;j++){
mx=max(mx,a[j]);
mn=min(mn,a[j]);
ans[i].push_back(mx-mn);
}
}
dp[0]={0};
for(int i=1;i<=n;i++){
dp[i][1]=ans[1][i-1];
dp[i][i]=0;
loc[i]={(short)i};
for(int j=2;j<i;j++){
while(now[j-1]+1<loc[j-1].size()&&find(loc[j-1][now[j-1]],loc[j-1][now[j-1]+1],dp[loc[j-1][now[j-1]]][j-1],dp[loc[j-1][now[j-1]+1]][j-1])<=i)now[j-1]++;
dp[i][j]=dp[loc[j-1][now[j-1]]][j-1]+ans[loc[j-1][now[j-1]]+1][i-(loc[j-1][now[j-1]]+1)];
// cout<<loc[j-1][now[j-1]]<<" "<<loc[j-1].size()<<"\n";
}
// cout<<"\n";
if(i<n)
for(int j=1;j<i;j++){
while(loc[j].size()>1){
int tmp=loc[j].back(),tmp1=loc[j][loc[j].size()-2];
int nw=find(tmp,i,dp[tmp][j],dp[i][j]);
int lst=find(tmp,tmp1,dp[tmp][j],dp[tmp1][j]);
// if(0){
if(nw<=lst){
loc[j].pop_back();
}
else{
break;
}
}
loc[j].push_back(i);
}
// for(int j=1;j<=i;j++)cout<<dp[i][j]<<" ";cout<<"\n\n";
}
for(int j=1;j<=n;j++)cout<<dp[n][j]<<"\n";
}
int main(){
ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
int t=1;
// cin>>t;
while(t--)solve();
return 0;
}
/*
*/
詳細信息
Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 3668kb
input:
2 -1 3 -1 2 -1 4 1 -1 1 -1 -1 4 2 -1 3 -1
output:
4 0
result:
wrong answer 1st lines differ - expected: '1 2', found: '4'