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Submission #888068

# Submission time Handle Problem Language Result Execution time Memory
888068 2023-12-15T22:08:47 Z amirhoseinfar1385 Collecting Stamps 3 (JOI20_ho_t3) C++17
15 / 100
 50 ms 145668 KB 
#include<bits/stdc++.h>
using namespace std;
const long long maxn=210,inf=1000000000000;
pair<long long,long long>dp[maxn][maxn][maxn];
long long n,allx[maxn],allt[maxn],L;
long long res=0;
long long fas(long long a,long long b){
	if(a==b){
		assert(0);
	}
	long long ret=a-b;
	ret+=L;
	if(ret<0){
		assert(0);
	}
	ret%=L;
	//cout<<a<<" "<<b<<" "<<ret<<" wtf"<<endl;
	return ret;
}

void upddp(long long l,long long r){
	//cout<<l<<" "<<r<<" "<<dp[l][r][0].first<<" "<<dp[l][r][0].second<<"\n";
	long long ll=(l-1)+n,rr=r+1;
	ll%=n;
	rr%=n;
	for(long long i=0;i<n;i++){
		if(dp[l][r][i].first!=inf){
			//cout<<l<<" "<<r<<" "<<i<<" "<<dp[l][r][i].first<<" "<<dp[l][r][i].second<<'\n';
			dp[ll][r][i].first=min(dp[ll][r][i].first,dp[l][r][i].first+fas(allx[l],allx[ll]));
			dp[ll][r][i].second=min(dp[ll][r][i].second,dp[ll][r][i].first+fas(allx[r],allx[ll]));
			if(fas(allx[l],allx[ll])+dp[l][r][i].first<=allt[ll]){
				dp[ll][r][i+1].first=min(dp[ll][r][i+1].first,dp[l][r][i].first+fas(allx[l],allx[ll]));
				dp[ll][r][i+1].second=min(dp[ll][r][i+1].second,dp[ll][r][i].first+fas(allx[r],allx[ll]));
				res=max(res,i+1);
			}
			dp[l][rr][i].second=min(dp[l][rr][i].second,dp[l][r][i].second+fas(allx[rr],allx[r]));
			dp[l][rr][i].first=min(dp[l][rr][i].first,dp[l][rr][i].second+fas(allx[rr],allx[l]));
			if(fas(allx[rr],allx[r])+dp[l][r][i].second<=allt[rr]){
				dp[l][rr][i+1].second=min(dp[l][rr][i].second,dp[l][r][i].second+fas(allx[rr],allx[r]));
				dp[l][rr][i+1].first=min(dp[l][rr][i+1].first,dp[l][rr][i+1].second+fas(allx[rr],allx[l]));
				res=max(res,i+1);
			}
		}
	}
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	for(long long i=0;i<maxn;i++){
		for(long long j=0;j<maxn;j++){
			for(long long h=0;h<maxn;h++){
				dp[i][j][h]=make_pair(inf,inf);
			}
		}
	}
	cin>>n>>L;
	for(long long i=0;i<n;i++){
		cin>>allx[i];
	}
	for(long long i=0;i<n;i++){
		cin>>allt[i];
	}
	if(n==1){
		if(min(allx[0],fas(0,allx[0]))<=allt[0]){
			cout<<1<<endl;
			return 0;
		}
		cout<<0<<endl;
		return 0;
	}
	if(allx[0]<=allt[0]){
		dp[0][0][0]=dp[0][0][1]=make_pair(allx[0],allx[0]);
		res=1;
	}
	else{
		dp[0][0][0]=make_pair(allx[0],allx[0]);
	}
	if(fas(0,allx[n-1])<=allt[n-1]){
		dp[n-1][n-1][0]=dp[n-1][n-1][1]=make_pair(fas(0,allx[n-1]),fas(0,allx[n-1]));
		res=1;
	}
	else{
		dp[n-1][n-1][0]=make_pair(fas(0,allx[n-1]),fas(0,allx[n-1]));
	}
	for(long long i=0;i<n-1;i++){
		for(long long l=n-1;l>=0;l--){
			upddp(l,(l+i)%n);
		}
	}
	cout<<res<<"\n";
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 145240 KB Output is correct
2 Correct 21 ms 145244 KB Output is correct
3 Correct 20 ms 145336 KB Output is correct
4 Correct 20 ms 145244 KB Output is correct
5 Correct 20 ms 145244 KB Output is correct
6 Correct 20 ms 145236 KB Output is correct
7 Correct 20 ms 145244 KB Output is correct
8 Correct 20 ms 145396 KB Output is correct
9 Correct 20 ms 145428 KB Output is correct
10 Correct 20 ms 145244 KB Output is correct
11 Correct 21 ms 145360 KB Output is correct
12 Correct 21 ms 145288 KB Output is correct
13 Correct 20 ms 145244 KB Output is correct
14 Correct 22 ms 145316 KB Output is correct
15 Correct 20 ms 145668 KB Output is correct
16 Correct 20 ms 145236 KB Output is correct
17 Correct 20 ms 145292 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 145240 KB Output is correct
2 Correct 21 ms 145244 KB Output is correct
3 Correct 20 ms 145336 KB Output is correct
4 Correct 20 ms 145244 KB Output is correct
5 Correct 20 ms 145244 KB Output is correct
6 Correct 20 ms 145236 KB Output is correct
7 Correct 20 ms 145244 KB Output is correct
8 Correct 20 ms 145396 KB Output is correct
9 Correct 20 ms 145428 KB Output is correct
10 Correct 20 ms 145244 KB Output is correct
11 Correct 21 ms 145360 KB Output is correct
12 Correct 21 ms 145288 KB Output is correct
13 Correct 20 ms 145244 KB Output is correct
14 Correct 22 ms 145316 KB Output is correct
15 Correct 20 ms 145668 KB Output is correct
16 Correct 20 ms 145236 KB Output is correct
17 Correct 20 ms 145292 KB Output is correct
18 Correct 20 ms 145244 KB Output is correct
19 Correct 20 ms 145220 KB Output is correct
20 Correct 21 ms 145232 KB Output is correct
21 Correct 20 ms 145244 KB Output is correct
22 Correct 21 ms 145236 KB Output is correct
23 Correct 20 ms 145244 KB Output is correct
24 Correct 20 ms 145440 KB Output is correct
25 Correct 22 ms 145236 KB Output is correct
26 Correct 20 ms 145244 KB Output is correct
27 Correct 21 ms 145232 KB Output is correct
28 Correct 20 ms 145176 KB Output is correct
29 Correct 21 ms 145240 KB Output is correct
30 Correct 21 ms 145408 KB Output is correct
31 Correct 21 ms 145240 KB Output is correct
32 Correct 21 ms 145440 KB Output is correct
33 Correct 21 ms 145236 KB Output is correct
34 Correct 20 ms 145244 KB Output is correct
35 Correct 20 ms 145244 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 145240 KB Output is correct
2 Correct 21 ms 145244 KB Output is correct
3 Correct 20 ms 145336 KB Output is correct
4 Correct 20 ms 145244 KB Output is correct
5 Correct 20 ms 145244 KB Output is correct
6 Correct 20 ms 145236 KB Output is correct
7 Correct 20 ms 145244 KB Output is correct
8 Correct 20 ms 145396 KB Output is correct
9 Correct 20 ms 145428 KB Output is correct
10 Correct 20 ms 145244 KB Output is correct
11 Correct 21 ms 145360 KB Output is correct
12 Correct 21 ms 145288 KB Output is correct
13 Correct 20 ms 145244 KB Output is correct
14 Correct 22 ms 145316 KB Output is correct
15 Correct 20 ms 145668 KB Output is correct
16 Correct 20 ms 145236 KB Output is correct
17 Correct 20 ms 145292 KB Output is correct
18 Correct 50 ms 145408 KB Output is correct
19 Correct 37 ms 145244 KB Output is correct
20 Incorrect 27 ms 145240 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 145240 KB Output is correct
2 Correct 21 ms 145244 KB Output is correct
3 Correct 20 ms 145336 KB Output is correct
4 Correct 20 ms 145244 KB Output is correct
5 Correct 20 ms 145244 KB Output is correct
6 Correct 20 ms 145236 KB Output is correct
7 Correct 20 ms 145244 KB Output is correct
8 Correct 20 ms 145396 KB Output is correct
9 Correct 20 ms 145428 KB Output is correct
10 Correct 20 ms 145244 KB Output is correct
11 Correct 21 ms 145360 KB Output is correct
12 Correct 21 ms 145288 KB Output is correct
13 Correct 20 ms 145244 KB Output is correct
14 Correct 22 ms 145316 KB Output is correct
15 Correct 20 ms 145668 KB Output is correct
16 Correct 20 ms 145236 KB Output is correct
17 Correct 20 ms 145292 KB Output is correct
18 Correct 20 ms 145244 KB Output is correct
19 Correct 20 ms 145220 KB Output is correct
20 Correct 21 ms 145232 KB Output is correct
21 Correct 20 ms 145244 KB Output is correct
22 Correct 21 ms 145236 KB Output is correct
23 Correct 20 ms 145244 KB Output is correct
24 Correct 20 ms 145440 KB Output is correct
25 Correct 22 ms 145236 KB Output is correct
26 Correct 20 ms 145244 KB Output is correct
27 Correct 21 ms 145232 KB Output is correct
28 Correct 20 ms 145176 KB Output is correct
29 Correct 21 ms 145240 KB Output is correct
30 Correct 21 ms 145408 KB Output is correct
31 Correct 21 ms 145240 KB Output is correct
32 Correct 21 ms 145440 KB Output is correct
33 Correct 21 ms 145236 KB Output is correct
34 Correct 20 ms 145244 KB Output is correct
35 Correct 20 ms 145244 KB Output is correct
36 Correct 50 ms 145408 KB Output is correct
37 Correct 37 ms 145244 KB Output is correct
38 Incorrect 27 ms 145240 KB Output isn't correct
39 Halted 0 ms 0 KB -