oj.uz

Submission #635834

# Submission time Handle Problem Language Result Execution time Memory
635834 2022-08-27T07:09:53 Z K4YAN Liteh and Newfiteh (INOI20_litehfiteh) C++17
100 / 100
 506 ms 270400 KB 
//Be Name Khoda

#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
#define pll pair<ll, ll>
#define all(x) x.begin(), x.end()

const ll mxn = 1e5 + 16, lg = 18, INF = 1e16 + 16;
ll n, q, w, e;
ll dp[mxn], mn[mxn][lg], pd[mxn][lg][lg];
vector<ll> g;
bool bomb;

inline void input() {

    for(int i = 0; i < mxn; i++) {
        dp[i] = INF;
        for(int j = 0; j < lg; j++) {
            mn[i][j] = INF;
            fill(pd[i][j], pd[i][j] + lg, INF);
        }
    }

    cin >> n;
    for(int i = 0; i < n; i++) {
        cin >> q;
        g.push_back(q);
        if(q >= lg) bomb = 1;
        mn[i][0] = q;
    }

}

inline void solve() {

    if(bomb) {
        cout << "-1\n";
        return;
    }

    for(int j = 1; j < lg; j++) {
        for(int i = 0; i < n; i++) {
            if(i + (1 << (j - 1)) >= n) break;
            mn[i][j] = min(mn[i][j - 1], mn[i + (1 << (j - 1))][j - 1]);
        }
    }
    for(int i = 0; i < n; i++) {
        for(int k = 0; k < lg; k++) {
            if(k == g[i] - 1) {
                pd[i][0][k] = 1;
            } if(k == g[i]) {
                pd[i][0][k] = 0;
            }
        }
    }
    for(int j = 1; j < lg; j++) {
        for(int i = 0; i < n; i++) {
            if(i + (1 << j) > n) break;
            for(int k = 0; k < lg; k++) {
                if(mn[i][j] < k) break;
                pd[i][j][k] = min(INF, pd[i][j - 1][k] + pd[i + (1 << (j - 1))][j - 1][k]);
                if(k + 1 < lg && mn[i][j] >= k + 1) {
                    pd[i][j][k] = min(pd[i][j][k], pd[i][j - 1][k + 1] + pd[i + (1 << (j - 1))][j - 1][k + 1] + 1);
                } 
            }
        }
    }
    for(int i = 0; i < n; i++) {
        for(int j = 0; (1 << j) <= i + 1; j++) {
            if((1 << j) == i + 1) {
                dp[i] = min(dp[i], pd[0][j][0]);
                continue;
            }
            dp[i] = min(dp[i], pd[i - (1 << j) + 1][j][0] + dp[i - (1 << j)]);
        }
    }
    if(dp[n - 1] >= INF) {
        cout << "-1\n";
        return;
    } cout << dp[n - 1] << endl;
    return;

}

int main() {

    ios::sync_with_stdio(false); cin.tie(NULL);

    input(), solve();

    return 0;
    
}
/*
8
2 2 2 0 1 1 2 2
*/

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 111 ms 268808 KB Output is correct
2 Correct 111 ms 268840 KB Output is correct
3 Correct 107 ms 268748 KB Output is correct
4 Correct 115 ms 268792 KB Output is correct
5 Correct 115 ms 268768 KB Output is correct
6 Correct 114 ms 268860 KB Output is correct
7 Correct 126 ms 268852 KB Output is correct
8 Correct 110 ms 268748 KB Output is correct
9 Correct 122 ms 268772 KB Output is correct
10 Correct 112 ms 268884 KB Output is correct
11 Correct 112 ms 268764 KB Output is correct
12 Correct 110 ms 268756 KB Output is correct
13 Correct 107 ms 268748 KB Output is correct

Subtask #2
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 111 ms 268808 KB Output is correct
2 Correct 111 ms 268840 KB Output is correct
3 Correct 107 ms 268748 KB Output is correct
4 Correct 115 ms 268792 KB Output is correct
5 Correct 115 ms 268768 KB Output is correct
6 Correct 114 ms 268860 KB Output is correct
7 Correct 126 ms 268852 KB Output is correct
8 Correct 110 ms 268748 KB Output is correct
9 Correct 122 ms 268772 KB Output is correct
10 Correct 112 ms 268884 KB Output is correct
11 Correct 112 ms 268764 KB Output is correct
12 Correct 110 ms 268756 KB Output is correct
13 Correct 107 ms 268748 KB Output is correct
14 Correct 114 ms 268788 KB Output is correct
15 Correct 114 ms 268748 KB Output is correct
16 Correct 118 ms 268732 KB Output is correct
17 Correct 116 ms 268804 KB Output is correct
18 Correct 126 ms 268808 KB Output is correct
19 Correct 112 ms 268812 KB Output is correct
20 Correct 140 ms 269012 KB Output is correct
21 Correct 125 ms 269044 KB Output is correct
22 Correct 268 ms 270232 KB Output is correct
23 Correct 117 ms 270400 KB Output is correct
24 Correct 340 ms 270152 KB Output is correct
25 Correct 113 ms 268736 KB Output is correct
26 Correct 116 ms 268804 KB Output is correct
27 Correct 110 ms 268752 KB Output is correct
28 Correct 121 ms 268760 KB Output is correct
29 Correct 142 ms 269064 KB Output is correct
30 Correct 124 ms 269020 KB Output is correct
31 Correct 119 ms 269012 KB Output is correct
32 Correct 119 ms 269064 KB Output is correct
33 Correct 257 ms 270112 KB Output is correct
34 Correct 354 ms 270252 KB Output is correct
35 Correct 333 ms 270200 KB Output is correct
36 Correct 255 ms 270148 KB Output is correct
37 Correct 506 ms 270348 KB Output is correct
38 Correct 261 ms 270220 KB Output is correct
39 Correct 239 ms 270332 KB Output is correct
40 Correct 309 ms 270156 KB Output is correct
41 Correct 252 ms 270124 KB Output is correct
42 Correct 340 ms 270284 KB Output is correct
43 Correct 257 ms 270208 KB Output is correct
44 Correct 242 ms 270156 KB Output is correct
45 Correct 248 ms 270172 KB Output is correct
46 Correct 262 ms 270200 KB Output is correct
47 Correct 212 ms 270120 KB Output is correct
48 Correct 195 ms 270064 KB Output is correct
49 Correct 215 ms 270072 KB Output is correct
50 Correct 305 ms 270212 KB Output is correct
51 Correct 118 ms 269036 KB Output is correct
52 Correct 238 ms 270096 KB Output is correct