oj.uz

Submission #994689

# Submission time Handle Problem Language Result Execution time Memory
994689 2024-06-08T03:54:25 Z LCJLY Trains (BOI24_trains) C++14
100 / 100
 235 ms 78932 KB 
#include <bits/stdc++.h>
using namespace std;
	
#define int long long 
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << "  " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << "  " << j << " " << #i << "  " << q << " " << #p << endl;
#define show4(x,y) for(auto it:y) cout << it << " "; cout << #x << endl;
typedef pair<int,int>pii;
typedef pair<int,pii>pi2;

const int blk=300;
const int mod=1e9+7;

void solve(){	
	int n;
	cin >> n;
	
	int temp,temp2;
	vector<int>adj[n+5];
	int cnt[305][305];
	memset(cnt,0,sizeof(cnt));
	
	vector<int>prefix[n+5];
	vector<int>done[n+5];
	int arr[n+5];
	
	for(int x=1;x<=n;x++){
		cin >> temp >> temp2;
		arr[x]=temp;
		if(temp==0) continue;
		if(temp>=blk){
			for(int y=x+temp;y<=n;y+=temp){
				if(temp2==0) break;
				temp2--;
				adj[x].push_back(y);
			}
		}
		else{
			int hold=(n-x)/temp;
			temp2=min(temp2,hold);
			prefix[x].push_back(temp);
			prefix[x+temp2*temp].push_back(-x);
		}
	}
	
	int dp[n+5];
	memset(dp,0,sizeof(dp));
	dp[1]=1;
	for(int x=1;x<=n;x++){
		//show(x,x);
		for(int y=1;y<blk;y++){
			dp[x]=(dp[x]+cnt[x%y][y]+mod)%mod;
		}
		
		for(auto it:adj[x]){
			dp[it]=(dp[it]+dp[x])%mod;
		}
		
		for(auto it:prefix[x]){
			if(it>0){
				//show(it,it);
				cnt[x%it][it]+=dp[x];
				cnt[x%it][it]%=mod;
			}
			else{
				int hold=-it;
				//show(hold,hold);
				cnt[hold%arr[hold]][arr[hold]]-=dp[hold]-mod;
				cnt[hold%arr[hold]][arr[hold]]%=mod;
			}
		}
		//show4(dp,dp);
	}
	//show4(dp,dp);
	
	int counter=0;
	for(int x=1;x<=n;x++){
		counter=(counter+dp[x])%mod;
	}
	cout << counter;
}
 
int32_t main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int t=1;
	//cin >> t;
	//freopen("in.txt","r",stdin);
	while(t--){
		solve();
	}
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Correct 0 ms 1116 KB Output is correct
4 Correct 0 ms 1116 KB Output is correct
5 Correct 0 ms 1116 KB Output is correct
6 Correct 0 ms 1116 KB Output is correct
7 Correct 1 ms 1116 KB Output is correct
8 Correct 1 ms 1116 KB Output is correct
9 Correct 0 ms 1116 KB Output is correct
10 Correct 1 ms 1116 KB Output is correct
11 Correct 1 ms 1116 KB Output is correct
12 Correct 1 ms 1116 KB Output is correct
13 Correct 0 ms 1116 KB Output is correct
14 Correct 1 ms 1116 KB Output is correct
15 Correct 1 ms 1116 KB Output is correct
16 Correct 1 ms 988 KB Output is correct
17 Correct 1 ms 1116 KB Output is correct
18 Correct 1 ms 1112 KB Output is correct
19 Correct 1 ms 1116 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Correct 0 ms 1116 KB Output is correct
4 Correct 0 ms 1116 KB Output is correct
5 Correct 0 ms 1116 KB Output is correct
6 Correct 0 ms 1116 KB Output is correct
7 Correct 1 ms 1116 KB Output is correct
8 Correct 1 ms 1116 KB Output is correct
9 Correct 0 ms 1116 KB Output is correct
10 Correct 1 ms 1116 KB Output is correct
11 Correct 1 ms 1116 KB Output is correct
12 Correct 1 ms 1116 KB Output is correct
13 Correct 0 ms 1116 KB Output is correct
14 Correct 1 ms 1116 KB Output is correct
15 Correct 1 ms 1116 KB Output is correct
16 Correct 1 ms 988 KB Output is correct
17 Correct 1 ms 1116 KB Output is correct
18 Correct 1 ms 1112 KB Output is correct
19 Correct 1 ms 1116 KB Output is correct
20 Correct 14 ms 2140 KB Output is correct
21 Correct 5 ms 1372 KB Output is correct
22 Correct 17 ms 2824 KB Output is correct
23 Correct 10 ms 2008 KB Output is correct
24 Correct 7 ms 1628 KB Output is correct
25 Correct 14 ms 2344 KB Output is correct
26 Correct 8 ms 1776 KB Output is correct
27 Correct 14 ms 2248 KB Output is correct
28 Correct 17 ms 2392 KB Output is correct
29 Correct 17 ms 2396 KB Output is correct
30 Correct 16 ms 2140 KB Output is correct
31 Correct 17 ms 2244 KB Output is correct
32 Correct 17 ms 2396 KB Output is correct
33 Correct 16 ms 2396 KB Output is correct
34 Correct 16 ms 2140 KB Output is correct
35 Correct 16 ms 2140 KB Output is correct
36 Correct 16 ms 2396 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 11 ms 2008 KB Output is correct
3 Correct 8 ms 1628 KB Output is correct
4 Correct 14 ms 2308 KB Output is correct
5 Correct 125 ms 10332 KB Output is correct
6 Correct 158 ms 13520 KB Output is correct
7 Correct 159 ms 13520 KB Output is correct
8 Correct 1 ms 1112 KB Output is correct
9 Correct 1 ms 1096 KB Output is correct
10 Correct 1 ms 1116 KB Output is correct
11 Correct 17 ms 2396 KB Output is correct
12 Correct 160 ms 13516 KB Output is correct
13 Correct 1 ms 1116 KB Output is correct
14 Correct 17 ms 2352 KB Output is correct
15 Correct 161 ms 13704 KB Output is correct

Subtask #4
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 7256 KB Output is correct
2 Correct 64 ms 6236 KB Output is correct
3 Correct 156 ms 13644 KB Output is correct
4 Correct 114 ms 9948 KB Output is correct
5 Correct 1 ms 1116 KB Output is correct
6 Correct 1 ms 1116 KB Output is correct
7 Correct 16 ms 2396 KB Output is correct
8 Correct 158 ms 13516 KB Output is correct

Subtask #5
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Correct 0 ms 1116 KB Output is correct
4 Correct 0 ms 1116 KB Output is correct
5 Correct 0 ms 1116 KB Output is correct
6 Correct 0 ms 1116 KB Output is correct
7 Correct 1 ms 1116 KB Output is correct
8 Correct 1 ms 1116 KB Output is correct
9 Correct 0 ms 1116 KB Output is correct
10 Correct 1 ms 1116 KB Output is correct
11 Correct 1 ms 1116 KB Output is correct
12 Correct 1 ms 1116 KB Output is correct
13 Correct 0 ms 1116 KB Output is correct
14 Correct 1 ms 1116 KB Output is correct
15 Correct 1 ms 1116 KB Output is correct
16 Correct 1 ms 988 KB Output is correct
17 Correct 1 ms 1116 KB Output is correct
18 Correct 1 ms 1112 KB Output is correct
19 Correct 1 ms 1116 KB Output is correct
20 Correct 14 ms 2140 KB Output is correct
21 Correct 5 ms 1372 KB Output is correct
22 Correct 17 ms 2824 KB Output is correct
23 Correct 10 ms 2008 KB Output is correct
24 Correct 7 ms 1628 KB Output is correct
25 Correct 14 ms 2344 KB Output is correct
26 Correct 8 ms 1776 KB Output is correct
27 Correct 14 ms 2248 KB Output is correct
28 Correct 17 ms 2392 KB Output is correct
29 Correct 17 ms 2396 KB Output is correct
30 Correct 16 ms 2140 KB Output is correct
31 Correct 17 ms 2244 KB Output is correct
32 Correct 17 ms 2396 KB Output is correct
33 Correct 16 ms 2396 KB Output is correct
34 Correct 16 ms 2140 KB Output is correct
35 Correct 16 ms 2140 KB Output is correct
36 Correct 16 ms 2396 KB Output is correct
37 Correct 1 ms 1116 KB Output is correct
38 Correct 11 ms 2008 KB Output is correct
39 Correct 8 ms 1628 KB Output is correct
40 Correct 14 ms 2308 KB Output is correct
41 Correct 125 ms 10332 KB Output is correct
42 Correct 158 ms 13520 KB Output is correct
43 Correct 159 ms 13520 KB Output is correct
44 Correct 1 ms 1112 KB Output is correct
45 Correct 1 ms 1096 KB Output is correct
46 Correct 1 ms 1116 KB Output is correct
47 Correct 17 ms 2396 KB Output is correct
48 Correct 160 ms 13516 KB Output is correct
49 Correct 1 ms 1116 KB Output is correct
50 Correct 17 ms 2352 KB Output is correct
51 Correct 161 ms 13704 KB Output is correct
52 Correct 76 ms 7256 KB Output is correct
53 Correct 64 ms 6236 KB Output is correct
54 Correct 156 ms 13644 KB Output is correct
55 Correct 114 ms 9948 KB Output is correct
56 Correct 1 ms 1116 KB Output is correct
57 Correct 1 ms 1116 KB Output is correct
58 Correct 16 ms 2396 KB Output is correct
59 Correct 158 ms 13516 KB Output is correct
60 Correct 133 ms 11612 KB Output is correct
61 Correct 157 ms 13728 KB Output is correct
62 Correct 156 ms 13404 KB Output is correct
63 Correct 162 ms 13720 KB Output is correct
64 Correct 153 ms 9772 KB Output is correct
65 Correct 235 ms 78932 KB Output is correct
66 Correct 153 ms 13808 KB Output is correct
67 Correct 163 ms 15192 KB Output is correct
68 Correct 156 ms 11740 KB Output is correct
69 Correct 170 ms 19684 KB Output is correct
70 Correct 155 ms 13144 KB Output is correct
71 Correct 158 ms 12892 KB Output is correct
72 Correct 162 ms 24252 KB Output is correct