Submission #1111371

#	Time	Username	Problem	Language	Result	Execution time	Memory
1111371		Ruichen	Trains (BOI24_trains)	C++17	0 / 100	2063 ms	2104 KiB

Main

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

int main(){
	int n;
	long long ans=0;
	cin >> n;
	vector<long long> a(n);
	a[0]=1;
	vector<int> v(n),x(n);
	for(int i=0; i<n; i++){
		cin >> v[i] >> x[i];
		for(int j=i+v[i]; j<min((x[i]+1)*v[i]+i,n); j+=v[i]){
			a[j]+=a[i];
			a[j]%=1000000007;
		}
		ans+=a[i];
		ans%=1000000007;
	}
	cout << ans << endl;
	return 0;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 13
• Subtask 3: 0 / 16
• Subtask 4: 0 / 34
• Subtask 5: 0 / 29