oj.uz

Submission #563862

# Submission time Handle Problem Language Result Execution time Memory
563862 2022-05-18T07:36:31 Z groshi Building 4 (JOI20_building4) C++17
100 / 100
 246 ms 45520 KB 
#include<iostream>

using namespace std;
int inf=1e9;
pair<int,int> dp[1200000][2];
char wyn[1200000];
int a[1200000],b[1200000];
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin>>n;
    for(int i=0;i<=2*n;i++)
    {
        dp[i][0]={inf,-inf};
        dp[i][1]={inf,-inf};
    }
    for(int i=0;i<2*n;i++)
        cin>>a[i];
    for(int i=0;i<2*n;i++)
        cin>>b[i];
    dp[0][0]={0,0};
    dp[0][1]={1,1};
    for(int i=0;i<2*n;i++)
    {
        if(a[i]<=a[i+1])
        {
            dp[i+1][1].first=min(dp[i][1].first+1,dp[i+1][1].first);
            dp[i+1][1].second=max(dp[i][1].second+1,dp[i+1][1].second);
        }
        if(a[i]<=b[i+1])
        {
            dp[i+1][0].first=min(dp[i][1].first,dp[i+1][0].first);
            dp[i+1][0].second=max(dp[i+1][0].second,dp[i][1].second);
        }
        if(b[i]<=a[i+1])
        {
            dp[i+1][1].first=min(dp[i+1][1].first,dp[i][0].first+1);
            dp[i+1][1].second=max(dp[i+1][1].second,dp[i][0].second+1);
        }
        if(b[i]<=b[i+1])
        {
            dp[i+1][0].first=min(dp[i+1][0].first,dp[i][0].first);
            dp[i+1][0].second=max(dp[i+1][0].second,dp[i][0].second);
        }
    }
    int zostalo=n,ost=inf;
    for(int i=2*n-1;i>=0;i--)
    {
        if(dp[i][1].first<=zostalo && dp[i][1].second>=zostalo && a[i]<=ost)
        {
            wyn[i]='A';
            ost=a[i];
            zostalo--;
        }
        else if(dp[i][0].first<=zostalo && dp[i][0].second>=zostalo && b[i]<=ost)
        {
            wyn[i]='B';
            ost=b[i];
        }
        else{
            cout<<"-1";
            return 0;
        }
    }
    for(int i=0;i<2*n;i++)
        cout<<wyn[i];
    return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 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 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 428 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct

Subtask #2
89.0 / 89.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 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 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 428 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 211 ms 42408 KB Output is correct
35 Correct 239 ms 41876 KB Output is correct
36 Correct 221 ms 41196 KB Output is correct
37 Correct 224 ms 42148 KB Output is correct
38 Correct 211 ms 42108 KB Output is correct
39 Correct 209 ms 41216 KB Output is correct
40 Correct 226 ms 44688 KB Output is correct
41 Correct 214 ms 42160 KB Output is correct
42 Correct 227 ms 43624 KB Output is correct
43 Correct 235 ms 45132 KB Output is correct
44 Correct 245 ms 45132 KB Output is correct
45 Correct 239 ms 45216 KB Output is correct
46 Correct 229 ms 45020 KB Output is correct
47 Correct 228 ms 44236 KB Output is correct
48 Correct 222 ms 43976 KB Output is correct
49 Correct 231 ms 44840 KB Output is correct
50 Correct 246 ms 44304 KB Output is correct
51 Correct 233 ms 44228 KB Output is correct
52 Correct 164 ms 33356 KB Output is correct
53 Correct 166 ms 33344 KB Output is correct
54 Correct 158 ms 33340 KB Output is correct
55 Correct 160 ms 33096 KB Output is correct
56 Correct 227 ms 45520 KB Output is correct
57 Correct 200 ms 40140 KB Output is correct
58 Correct 210 ms 40644 KB Output is correct
59 Correct 196 ms 40268 KB Output is correct
60 Correct 197 ms 38216 KB Output is correct
61 Correct 213 ms 40808 KB Output is correct
62 Correct 213 ms 40204 KB Output is correct
63 Correct 198 ms 40728 KB Output is correct
64 Correct 192 ms 39376 KB Output is correct
65 Correct 198 ms 40896 KB Output is correct