Submission #970802

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
970802	2024-04-27 09:52:55	Aiperiii	Building 4 (JOI20_building4)	C++14	0 / 100	265 ms	524288 KiB

building4

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#include <bits/stdc++.h>
#define int long long
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
using namespace std;
const int N=4e3+5;
int a[N],b[N],dp[N][N][2];
vector <int> pr[N][N][2];
signed main(){
    ios_base::sync_with_stdio();
    cin.tie(0);cout.tie(0);
    int n;
    cin>>n;
    for(int i=1;i<=n*2;i++)cin>>a[i];
    for(int i=1;i<=n*2;i++)cin>>b[i];
    dp[0][0][0]=1;
    for(int i=1;i<=n*2;i++){
        for(int j=0;j<=i;j++){
            if(a[i]>=a[i-1]){
                dp[i][j][0]=dp[i-1][j][0];
                pr[i][j][0]={i-1,j,0};
            }
            if(a[i]>=b[i-1] && !dp[i][j][0]){
                dp[i][j][0]=dp[i-1][j][1];
                pr[i][j][0]={i-1,j,1};
            }
            if(j-1>=0){
                if(b[i]>=a[i-1]){
 
 
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• Subtask 1: 0 / 11
• Subtask 2: 0 / 89