Submission #697302

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
697302	2023-02-09T07:51:12 Z	Dan4Life	The short shank; Redemption (BOI21_prison)	C++17	35 / 100	205 ms	524288 KB

prison

#include <bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define int long long 
#define sz(a) (int)a.size()
#define all(a) a.begin(),a.end()
const int mxN = (int)1e5+10;
const int LINF = (int)1e18;
int n, k, T, a[mxN];
vector<vector<int>> dp,calc;

void dnc(int l, int r, int optl, int optr, int i) {
    if (l > r) return;
    int mid = (l+r)/2;
    pair<int,int> best = {LINF, 1};
    for (int k = optl; k <= min(mid, optr); k++) 
        best = min(best, {dp[k-1][i]+calc[k][mid],k});
    dp[mid][i+1] = best.fi;
    dnc(l,mid-1,optl,best.se,i);
    dnc(mid+1,r,best.se,optr,i);
}

int32_t main() {
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> n >> k >> T; k++;
    calc.resize(n+2,vector<int>(n+2,0));
    dp.resize(n+2,vector<int>(k+2,LINF));
    for(int i = 1; i <= n; i++) cin >> a[i];
    for(int i = 1; i <= n; i++){
        int ans = 0, mn = a[i];
        for(int j = i; j <= n; j++)
            mn = min(mn+1, a[j]), ans+=(mn<=T), calc[i][j] = ans;
    }
    for(int i = 1; i <= n; i++) dp[i][1] = calc[1][i];
    for(int i = 1; i < k; i++) dnc(1,n,1,n,i);
    cout << dp[n][k];
}

Subtask #1
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	1620 KB	Output is correct
3	Correct	1 ms	1748 KB	Output is correct
4	Correct	2 ms	2516 KB	Output is correct
5	Correct	4 ms	2644 KB	Output is correct
6	Correct	2 ms	2260 KB	Output is correct
7	Correct	4 ms	2388 KB	Output is correct
8	Correct	1 ms	2388 KB	Output is correct
9	Correct	2 ms	2388 KB	Output is correct
10	Correct	2 ms	2516 KB	Output is correct
11	Correct	3 ms	2644 KB	Output is correct

Subtask #2
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Runtime error	205 ms	524288 KB	Execution killed with signal 9
3	Halted	0 ms	0 KB	-

Subtask #3
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	1620 KB	Output is correct
3	Correct	1 ms	1748 KB	Output is correct
4	Correct	2 ms	2516 KB	Output is correct
5	Correct	4 ms	2644 KB	Output is correct
6	Correct	2 ms	2260 KB	Output is correct
7	Correct	4 ms	2388 KB	Output is correct
8	Correct	1 ms	2388 KB	Output is correct
9	Correct	2 ms	2388 KB	Output is correct
10	Correct	2 ms	2516 KB	Output is correct
11	Correct	3 ms	2644 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	1620 KB	Output is correct
14	Correct	1 ms	1748 KB	Output is correct
15	Correct	2 ms	2516 KB	Output is correct
16	Correct	3 ms	2644 KB	Output is correct
17	Correct	1 ms	2260 KB	Output is correct
18	Correct	2 ms	2388 KB	Output is correct
19	Correct	2 ms	2348 KB	Output is correct
20	Correct	2 ms	2388 KB	Output is correct
21	Correct	2 ms	2516 KB	Output is correct
22	Correct	3 ms	2644 KB	Output is correct
23	Correct	82 ms	129184 KB	Output is correct
24	Correct	107 ms	132300 KB	Output is correct
25	Correct	126 ms	135460 KB	Output is correct
26	Correct	162 ms	138672 KB	Output is correct
27	Correct	182 ms	141800 KB	Output is correct
28	Correct	75 ms	127948 KB	Output is correct
29	Correct	87 ms	128316 KB	Output is correct
30	Correct	89 ms	129868 KB	Output is correct
31	Correct	118 ms	133828 KB	Output is correct
32	Correct	121 ms	129812 KB	Output is correct
33	Correct	124 ms	129876 KB	Output is correct
34	Correct	73 ms	127656 KB	Output is correct
35	Correct	196 ms	141784 KB	Output is correct

Subtask #4
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Runtime error	187 ms	524288 KB	Execution killed with signal 9
3	Halted	0 ms	0 KB	-

Subtask #5
0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	1620 KB	Output is correct
3	Correct	1 ms	1748 KB	Output is correct
4	Correct	2 ms	2516 KB	Output is correct
5	Correct	4 ms	2644 KB	Output is correct
6	Correct	2 ms	2260 KB	Output is correct
7	Correct	4 ms	2388 KB	Output is correct
8	Correct	1 ms	2388 KB	Output is correct
9	Correct	2 ms	2388 KB	Output is correct
10	Correct	2 ms	2516 KB	Output is correct
11	Correct	3 ms	2644 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	1620 KB	Output is correct
14	Correct	1 ms	1748 KB	Output is correct
15	Correct	2 ms	2516 KB	Output is correct
16	Correct	3 ms	2644 KB	Output is correct
17	Correct	1 ms	2260 KB	Output is correct
18	Correct	2 ms	2388 KB	Output is correct
19	Correct	2 ms	2348 KB	Output is correct
20	Correct	2 ms	2388 KB	Output is correct
21	Correct	2 ms	2516 KB	Output is correct
22	Correct	3 ms	2644 KB	Output is correct
23	Correct	82 ms	129184 KB	Output is correct
24	Correct	107 ms	132300 KB	Output is correct
25	Correct	126 ms	135460 KB	Output is correct
26	Correct	162 ms	138672 KB	Output is correct
27	Correct	182 ms	141800 KB	Output is correct
28	Correct	75 ms	127948 KB	Output is correct
29	Correct	87 ms	128316 KB	Output is correct
30	Correct	89 ms	129868 KB	Output is correct
31	Correct	118 ms	133828 KB	Output is correct
32	Correct	121 ms	129812 KB	Output is correct
33	Correct	124 ms	129876 KB	Output is correct
34	Correct	73 ms	127656 KB	Output is correct
35	Correct	196 ms	141784 KB	Output is correct
36	Correct	0 ms	212 KB	Output is correct
37	Runtime error	187 ms	524288 KB	Execution killed with signal 9
38	Halted	0 ms	0 KB	-

Subtask #6
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	1620 KB	Output is correct
3	Correct	1 ms	1748 KB	Output is correct
4	Correct	2 ms	2516 KB	Output is correct
5	Correct	4 ms	2644 KB	Output is correct
6	Correct	2 ms	2260 KB	Output is correct
7	Correct	4 ms	2388 KB	Output is correct
8	Correct	1 ms	2388 KB	Output is correct
9	Correct	2 ms	2388 KB	Output is correct
10	Correct	2 ms	2516 KB	Output is correct
11	Correct	3 ms	2644 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Runtime error	205 ms	524288 KB	Execution killed with signal 9
14	Halted	0 ms	0 KB	-

Submission #697302

Compilation message

Subtask #1 15.0 / 15.0

Subtask #2 0 / 10.0

Subtask #3 20.0 / 20.0

Subtask #4 0 / 10.0

Subtask #5 0 / 25.0

Subtask #6 0 / 20.0

Subtask #1
15.0 / 15.0

Subtask #2
0 / 10.0

Subtask #3
20.0 / 20.0

Subtask #4
0 / 10.0

Subtask #5
0 / 25.0

Subtask #6
0 / 20.0