oj.uz

Submission #751794

# Submission time Handle Problem Language Result Execution time Memory
751794 2023-06-01T13:12:12 Z owoovo Collecting Stamps 3 (JOI20_ho_t3) C++14
5 / 100
 88 ms 108272 KB 
#include<bits/stdc++.h>
#define ll long long
using namespace std;
const ll maxn=1e15;
ll n,l,dpl[210][210][210],dpr[210][210][210],x[210],t[210];
ll dis(int a,int b){
    if(a<b)swap(a,b);
    return min(x[a]-x[b],x[b]-x[a]+l);
}
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int ans=0;
    cin>>n>>l;
    for(int i=1;i<=n;i++)cin>>x[i];
    x[n+1]=l;
    for(int i=1;i<=n;i++)cin>>t[i];
    for(int i=0;i<=n;i++){
        for(int j=0;j<=n;j++){
            for(int k=0;k<=n;k++){
                dpl[i][j][k]=maxn;
                dpr[i][j][k]=maxn;
            }
        }
    }
    for(int i=0;i<=n;i++){
        dpl[0][i][0]=0;
        dpr[i][0][0]=0;
    }
    for(int i=1;i<=n;i++){
        for(int j=0;j<=i;j++){
            for(int k=0;k<=i;k++){
                if(j>0){
                    dpl[j][i-j][k]=min(dpl[j][i-j][k],min(dpr[j-1][i-j][k]+dis(n+1-(j),i-j),dpl[j-1][i-j][k]+dis(n+1-(j-1),n+1-(j))));
                    if(k>0&&(dpl[j-1][i-j][k-1]+dis(n+1-(j-1),n+1-j))<=t[n+1-j])dpl[j][i-j][k]=min(dpl[i][i-j][k],dpl[j-1][i-j][k-1]+dis(n+1-(j-1),n+1-j));
                    if(k>0&&(dpr[j-1][i-j][k-1]+dis(i-j,n+1-j))<=t[n+1-j])dpl[j][i-j][k]=min(dpl[i][i-j][k],dpr[j-1][i-j][k-1]+dis(i-j,n+1-j));
                }
                if(i-j>0){
                    dpr[j][i-j][k]=min(dpr[j][i-j][k],min(dpr[j][i-j-1][k]+dis(i-j-1,i-j),dpl[j][i-j-1][k]+dis(i-j,n+1-(j))));
                    if(k>0&&(dpr[j][i-j-1][k-1]+dis(i-j,i-j-1))<=t[i-j])dpr[j][i-j][k]=min(dpr[i][i-j][k],dpr[j][i-j-1][k-1]+dis(i-j,i-j-1));
                    if(k>0&&(dpl[j][i-j-1][k-1]+dis(i-j,n+1-j))<=t[i-j])dpr[j][i-j][k]=min(dpr[i][i-j][k],dpl[j][i-j-1][k-1]+dis(i-j,n+1-j));
                }
            }
        }
    }
    for(int i=1;i<=n;i++){
        for(int j=0;j<=i;j++){
            for(int k=0;k<=i;k++){
                if(dpl[j][i-j][k]<maxn||dpr[j][i-j][k]<maxn){
                    ans=max(ans,k);
                }
            }
        }
    }
    cout<<ans<<"\n";
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 852 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 852 KB Output is correct
13 Correct 1 ms 852 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 1 ms 852 KB Output is correct
17 Correct 1 ms 852 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 852 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 852 KB Output is correct
13 Correct 1 ms 852 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 1 ms 852 KB Output is correct
17 Correct 1 ms 852 KB Output is correct
18 Incorrect 1 ms 1108 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 852 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 852 KB Output is correct
13 Correct 1 ms 852 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 1 ms 852 KB Output is correct
17 Correct 1 ms 852 KB Output is correct
18 Incorrect 88 ms 108272 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 852 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 852 KB Output is correct
13 Correct 1 ms 852 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 1 ms 852 KB Output is correct
17 Correct 1 ms 852 KB Output is correct
18 Incorrect 1 ms 1108 KB Output isn't correct
19 Halted 0 ms 0 KB -