oj.uz

Submission #779433

# Submission time Handle Problem Language Result Execution time Memory
779433 2023-07-11T11:56:54 Z ashcomp Liteh and Newfiteh (INOI20_litehfiteh) C++17
100 / 100
 245 ms 366272 KB 
#include <bits/stdc++.h>

using namespace std;

#define F first
#define S second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define wall cerr<<"-------------------------------------"<<endl
typedef long long ll;

const ll INF = 1e17;
const ll maxn = 1e5 + 10;

ll n , a[maxn] , mn[maxn] , res[maxn][22];
vector<pll> seg[maxn];
ll dp[22][maxn][22];


int main()
{
    ios_base::sync_with_stdio(0);cin.tie(NULL);cout.tie(NULL);
    cin>>n;
    for(int i=1; i<=n; i++){
        cin>>a[i];
    }
    for(int i=0; i<20; i++){
        for(int l=1; l<=n; l++){
            for(int k=0; k<20; k++){
                dp[i][l][k] = INF;
                dp[i][l][k] = INF;
            }
        }
    }
    for(int pos=1; pos<=n; pos++){
        dp[0][pos][a[pos]] = 0;
        if(a[pos]<1)continue;
        dp[0][pos][a[pos]-1] = 1;
    }
    for(int i=1; i<20; i++){
        for(int l=1; l+(1<<i)-1<=n; l++){
            int mid=l+(1<<(i-1));
            for(int k=0; k<20; k++){
                    dp[i][l][k] = min(dp[i][l][k] , dp[i-1][l][k]+dp[i-1][mid][k]);
                    dp[i][l][k] = min(dp[i][l][k] , dp[i-1][l][k+1]+dp[i-1][mid][k+1]+1);
            }
        }
    }
    /**
    for(int i=0; i<4; i++){
        for(int l=1; l+(1<<i)-1<=n; l++){
            for(int k=0; k<4; k++){
                    cout<<l<<'-'<<l+(1<<i)-1<<" , +"<<k<<" : "<<dp[i][l][k]<<endl;
            }
            wall;
        }
        wall;
        wall;
    }
    **/
    for(int i=1; i<=n; i++){
        for(int j=0; j<20; j++){
            res[i][j] = INF;
        }
    }
    for(int i=0; i<20; i++){
        for(int l=1; l+(1<<i)-1<=n; l++){
            int r=l+(1<<i)-1;
            res[r][i] = dp[i][l][0];
        }
    }
    mn[0] = 0;
    for(int i=1; i<=n; i++)mn[i] = INF;
    for(int i=1; i<=n; i++){
        for(int j=0; j<20; j++){
            int l = i-(1<<j) , w = res[i][j];
            if(l<0)continue;
            mn[i] = min(mn[i] , mn[l]+w);
        }
    }
    if(mn[n]>=(20*n)){
        cout<<-1;
        return 0;
    }else cout<<mn[n];

    return 0;
}
/**
10
0 0 0 0 0 0 0 0 0 0
*/
// ans = 5;

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4988 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4988 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct

Subtask #2
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4988 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4988 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 1 ms 2772 KB Output is correct
15 Correct 1 ms 2772 KB Output is correct
16 Correct 2 ms 3156 KB Output is correct
17 Correct 1 ms 3156 KB Output is correct
18 Correct 3 ms 6392 KB Output is correct
19 Correct 3 ms 6356 KB Output is correct
20 Correct 21 ms 39168 KB Output is correct
21 Correct 21 ms 39140 KB Output is correct
22 Correct 245 ms 366140 KB Output is correct
23 Correct 215 ms 366272 KB Output is correct
24 Correct 202 ms 366020 KB Output is correct
25 Correct 2 ms 2812 KB Output is correct
26 Correct 3 ms 3284 KB Output is correct
27 Correct 2 ms 3156 KB Output is correct
28 Correct 3 ms 6356 KB Output is correct
29 Correct 23 ms 39036 KB Output is correct
30 Correct 23 ms 39160 KB Output is correct
31 Correct 31 ms 39064 KB Output is correct
32 Correct 23 ms 39176 KB Output is correct
33 Correct 194 ms 366084 KB Output is correct
34 Correct 203 ms 366256 KB Output is correct
35 Correct 200 ms 366164 KB Output is correct
36 Correct 197 ms 366088 KB Output is correct
37 Correct 212 ms 366240 KB Output is correct
38 Correct 195 ms 366072 KB Output is correct
39 Correct 197 ms 366092 KB Output is correct
40 Correct 208 ms 366136 KB Output is correct
41 Correct 196 ms 365992 KB Output is correct
42 Correct 198 ms 366124 KB Output is correct
43 Correct 196 ms 366092 KB Output is correct
44 Correct 195 ms 366036 KB Output is correct
45 Correct 199 ms 366024 KB Output is correct
46 Correct 198 ms 366092 KB Output is correct
47 Correct 137 ms 245100 KB Output is correct
48 Correct 155 ms 285452 KB Output is correct
49 Correct 178 ms 325836 KB Output is correct
50 Correct 196 ms 366092 KB Output is correct
51 Correct 23 ms 39124 KB Output is correct
52 Correct 196 ms 366012 KB Output is correct