Submission #819950

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
819950	2023-08-10T16:13:47 Z	MohamedAhmed04	The short shank; Redemption (BOI21_prison)	C++14	35 / 100	1376 ms	19984 KB

prison

#include <bits/stdc++.h>

using namespace std ;

const int MAX = 4000 + 10 ;

int arr[MAX] ;
int n , m , t ; 

vector< pair<int , int> >vp ;
int st[MAX] ;

int cost[MAX][MAX] ;

int dp[MAX][MAX] ;

int solve()
{
	int sz = (int)(vp.size()) - 1 ;
	for(int i = 1 ; i <= sz ; ++i)
	{
		int curtim = 2e9 , sum = 0 ;
		for(int j = i ; j <= sz ; ++j)
		{
			curtim = min(curtim , arr[vp[j].second-1]+1) ;
			sum += min(t - curtim + 1 , vp[j].first) ;
			cost[i][j] = sum ;
			if(j+1 <= sz)
				curtim += vp[j+1].second - vp[j].second ;
		} 
	}
	for(int i = 1 ; i <= sz ; ++i)
		dp[i][0] = cost[1][i] ;
	for(int j = 1 ; j <= m ; ++j)
	{
		for(int i = 1 ; i <= sz ; ++i)
		{
			dp[i][j] = 1e9 ;
			for(int k = i ; k >= 1 ; --k) //put mattress at k
				dp[i][j] = min(dp[i][j] , dp[k-1][j-1] + cost[k+1][i]) ;
		}
	}
	return dp[sz][m] ;
}

int main()
{
	ios_base::sync_with_stdio(0) ;
	cin.tie(0) ;
	cin>>n>>m>>t ;
	for(int i = 1 ; i <= n ; ++i)
		cin>>arr[i] ;
	arr[0] = 1e9 + 10 ;
	vp.emplace_back(0 , 1e9+10) ;
	int ans = 0 , last = -1 , cnt = 0 ;
	for(int i = 1 ; i <= n ; ++i)
	{
		if(arr[i] <= t)
		{
			arr[i] = min(arr[i] , arr[i-1] + 1) ;
			if(cnt && last != -1)
				vp.emplace_back(cnt , last+1) ;
			ans++ , last = i , cnt = 0 ;
		}
		else
			cnt++ ;
	}
	if(cnt && last != -1)
		vp.emplace_back(cnt , last+1) , cnt = 0 ;
	ans += solve() ;
	return cout<<ans<<"\n" , 0 ;
}

Subtask #1
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	1 ms	1108 KB	Output is correct
3	Correct	1 ms	1236 KB	Output is correct
4	Correct	1 ms	1364 KB	Output is correct
5	Correct	2 ms	1352 KB	Output is correct
6	Correct	1 ms	1108 KB	Output is correct
7	Correct	1 ms	988 KB	Output is correct
8	Correct	1 ms	1364 KB	Output is correct
9	Correct	1 ms	1296 KB	Output is correct
10	Correct	1 ms	1224 KB	Output is correct
11	Correct	2 ms	1492 KB	Output is correct

Subtask #2
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Runtime error	3 ms	468 KB	Execution killed with signal 11
3	Halted	0 ms	0 KB	-

Subtask #3
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	1 ms	1108 KB	Output is correct
3	Correct	1 ms	1236 KB	Output is correct
4	Correct	1 ms	1364 KB	Output is correct
5	Correct	2 ms	1352 KB	Output is correct
6	Correct	1 ms	1108 KB	Output is correct
7	Correct	1 ms	988 KB	Output is correct
8	Correct	1 ms	1364 KB	Output is correct
9	Correct	1 ms	1296 KB	Output is correct
10	Correct	1 ms	1224 KB	Output is correct
11	Correct	2 ms	1492 KB	Output is correct
12	Correct	0 ms	328 KB	Output is correct
13	Correct	1 ms	1224 KB	Output is correct
14	Correct	1 ms	1240 KB	Output is correct
15	Correct	2 ms	1364 KB	Output is correct
16	Correct	2 ms	1356 KB	Output is correct
17	Correct	1 ms	1100 KB	Output is correct
18	Correct	1 ms	980 KB	Output is correct
19	Correct	1 ms	1364 KB	Output is correct
20	Correct	1 ms	1364 KB	Output is correct
21	Correct	2 ms	1236 KB	Output is correct
22	Correct	2 ms	1492 KB	Output is correct
23	Correct	97 ms	9964 KB	Output is correct
24	Correct	297 ms	11088 KB	Output is correct
25	Correct	364 ms	10636 KB	Output is correct
26	Correct	555 ms	11836 KB	Output is correct
27	Correct	454 ms	11344 KB	Output is correct
28	Correct	91 ms	10576 KB	Output is correct
29	Correct	74 ms	9780 KB	Output is correct
30	Correct	119 ms	9872 KB	Output is correct
31	Correct	273 ms	10048 KB	Output is correct
32	Correct	1376 ms	19864 KB	Output is correct
33	Correct	1291 ms	19984 KB	Output is correct
34	Correct	35 ms	6880 KB	Output is correct
35	Correct	278 ms	9724 KB	Output is correct

Subtask #4
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Runtime error	3 ms	468 KB	Execution killed with signal 11
3	Halted	0 ms	0 KB	-

Subtask #5
0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	1 ms	1108 KB	Output is correct
3	Correct	1 ms	1236 KB	Output is correct
4	Correct	1 ms	1364 KB	Output is correct
5	Correct	2 ms	1352 KB	Output is correct
6	Correct	1 ms	1108 KB	Output is correct
7	Correct	1 ms	988 KB	Output is correct
8	Correct	1 ms	1364 KB	Output is correct
9	Correct	1 ms	1296 KB	Output is correct
10	Correct	1 ms	1224 KB	Output is correct
11	Correct	2 ms	1492 KB	Output is correct
12	Correct	0 ms	328 KB	Output is correct
13	Correct	1 ms	1224 KB	Output is correct
14	Correct	1 ms	1240 KB	Output is correct
15	Correct	2 ms	1364 KB	Output is correct
16	Correct	2 ms	1356 KB	Output is correct
17	Correct	1 ms	1100 KB	Output is correct
18	Correct	1 ms	980 KB	Output is correct
19	Correct	1 ms	1364 KB	Output is correct
20	Correct	1 ms	1364 KB	Output is correct
21	Correct	2 ms	1236 KB	Output is correct
22	Correct	2 ms	1492 KB	Output is correct
23	Correct	97 ms	9964 KB	Output is correct
24	Correct	297 ms	11088 KB	Output is correct
25	Correct	364 ms	10636 KB	Output is correct
26	Correct	555 ms	11836 KB	Output is correct
27	Correct	454 ms	11344 KB	Output is correct
28	Correct	91 ms	10576 KB	Output is correct
29	Correct	74 ms	9780 KB	Output is correct
30	Correct	119 ms	9872 KB	Output is correct
31	Correct	273 ms	10048 KB	Output is correct
32	Correct	1376 ms	19864 KB	Output is correct
33	Correct	1291 ms	19984 KB	Output is correct
34	Correct	35 ms	6880 KB	Output is correct
35	Correct	278 ms	9724 KB	Output is correct
36	Correct	0 ms	340 KB	Output is correct
37	Runtime error	3 ms	468 KB	Execution killed with signal 11
38	Halted	0 ms	0 KB	-

Subtask #6
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	1 ms	1108 KB	Output is correct
3	Correct	1 ms	1236 KB	Output is correct
4	Correct	1 ms	1364 KB	Output is correct
5	Correct	2 ms	1352 KB	Output is correct
6	Correct	1 ms	1108 KB	Output is correct
7	Correct	1 ms	988 KB	Output is correct
8	Correct	1 ms	1364 KB	Output is correct
9	Correct	1 ms	1296 KB	Output is correct
10	Correct	1 ms	1224 KB	Output is correct
11	Correct	2 ms	1492 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Runtime error	3 ms	468 KB	Execution killed with signal 11
14	Halted	0 ms	0 KB	-

Submission #819950

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