oj.uz

Submission #1052940

# Submission time Handle Problem Language Result Execution time Memory
1052940 2024-08-11T06:25:27 Z vjudge1 Trains (BOI24_trains) C++17
58 / 100
 229 ms 9308 KB 
#include <iostream>
#include <vector>

using namespace std;
#define int long long
const int N = 1e5 + 5;
int dp[N], mod = 1e9 + 7, Ans;
int Mod[505][505];
vector<pair<int,int>> rem[N];

signed main(){
	int n;
	cin>>n;
	dp[1] = 1;
	for (int i=1, d, x;i<=n;i++){
		cin>>d>>x;
		for (int m=1;m<=500;m++)
			dp[i] = (dp[i] + Mod[m][i % m]) % mod;

		if (d > 500){
			for (int j=d;j/d<=x and i + j <= n;j+=d)
				dp[j + i] = (dp[j + i] + dp[i]) % mod;
		}
		else if (d){
			Mod[d][i % d] = (Mod[d][i % d] + dp[i]) % mod;
		}

		if (d and d * x + i <= n)
			rem[d * x + i].push_back({i, d});
		
		for (auto [ind, d_ind] : rem[i])
			Mod[d_ind][ind % d_ind] = (Mod[d_ind][ind % d_ind] - dp[ind] + mod) % mod;
		Ans = (Ans + dp[i]) % mod;
		// exit by removing those 
	}
	cout<<Ans<<'\n';
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4700 KB Output is correct
2 Correct 0 ms 4700 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Correct 1 ms 4700 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 0 ms 4700 KB Output is correct
8 Correct 1 ms 4700 KB Output is correct
9 Correct 0 ms 4700 KB Output is correct
10 Correct 1 ms 4700 KB Output is correct
11 Correct 1 ms 4700 KB Output is correct
12 Correct 1 ms 4700 KB Output is correct
13 Correct 0 ms 4700 KB Output is correct
14 Correct 1 ms 4700 KB Output is correct
15 Correct 1 ms 4696 KB Output is correct
16 Correct 1 ms 4700 KB Output is correct
17 Correct 1 ms 4700 KB Output is correct
18 Correct 1 ms 4700 KB Output is correct
19 Correct 1 ms 4528 KB Output is correct

Subtask #2
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4700 KB Output is correct
2 Correct 0 ms 4700 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Correct 1 ms 4700 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 0 ms 4700 KB Output is correct
8 Correct 1 ms 4700 KB Output is correct
9 Correct 0 ms 4700 KB Output is correct
10 Correct 1 ms 4700 KB Output is correct
11 Correct 1 ms 4700 KB Output is correct
12 Correct 1 ms 4700 KB Output is correct
13 Correct 0 ms 4700 KB Output is correct
14 Correct 1 ms 4700 KB Output is correct
15 Correct 1 ms 4696 KB Output is correct
16 Correct 1 ms 4700 KB Output is correct
17 Correct 1 ms 4700 KB Output is correct
18 Correct 1 ms 4700 KB Output is correct
19 Correct 1 ms 4528 KB Output is correct
20 Correct 18 ms 4872 KB Output is correct
21 Runtime error 7 ms 9308 KB Execution killed with signal 11
22 Halted 0 ms 0 KB -

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4696 KB Output is correct
2 Correct 14 ms 4776 KB Output is correct
3 Correct 10 ms 4700 KB Output is correct
4 Correct 19 ms 4700 KB Output is correct
5 Correct 175 ms 7268 KB Output is correct
6 Correct 229 ms 5460 KB Output is correct
7 Correct 216 ms 5732 KB Output is correct
8 Correct 1 ms 4700 KB Output is correct
9 Correct 0 ms 4700 KB Output is correct
10 Correct 1 ms 4700 KB Output is correct
11 Correct 22 ms 4808 KB Output is correct
12 Correct 223 ms 5352 KB Output is correct
13 Correct 1 ms 4696 KB Output is correct
14 Correct 23 ms 4780 KB Output is correct
15 Correct 220 ms 5448 KB Output is correct

Subtask #4
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 107 ms 4948 KB Output is correct
2 Correct 88 ms 4948 KB Output is correct
3 Correct 219 ms 5300 KB Output is correct
4 Correct 161 ms 5200 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct
6 Correct 0 ms 4700 KB Output is correct
7 Correct 23 ms 4700 KB Output is correct
8 Correct 220 ms 5404 KB Output is correct

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4700 KB Output is correct
2 Correct 0 ms 4700 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Correct 1 ms 4700 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 0 ms 4700 KB Output is correct
8 Correct 1 ms 4700 KB Output is correct
9 Correct 0 ms 4700 KB Output is correct
10 Correct 1 ms 4700 KB Output is correct
11 Correct 1 ms 4700 KB Output is correct
12 Correct 1 ms 4700 KB Output is correct
13 Correct 0 ms 4700 KB Output is correct
14 Correct 1 ms 4700 KB Output is correct
15 Correct 1 ms 4696 KB Output is correct
16 Correct 1 ms 4700 KB Output is correct
17 Correct 1 ms 4700 KB Output is correct
18 Correct 1 ms 4700 KB Output is correct
19 Correct 1 ms 4528 KB Output is correct
20 Correct 18 ms 4872 KB Output is correct
21 Runtime error 7 ms 9308 KB Execution killed with signal 11
22 Halted 0 ms 0 KB -