Submission #1289307

#	Time	Username	Problem	Language	Result	Execution time	Memory
1289307		ladnoooo	Trains (BOI24_trains)	C++20	0 / 100	17 ms	1600 KiB

Main

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

#define pb push_back
#define int long long
#define ll long long

const int maxN = 1e5 + 7;

int d[maxN], x[maxN];

const int MOD = 1e9 + 7;

int n;

int dp[maxN];

void solve() {
    cin >> n;
    for(int i = 1; i <= n; i++) {
        cin >> d[i] >> x[i];
        dp[i] = 1;
    }
    for(int i = n; i >= 1; i--) {
        if(d[i] == 0) continue;
        for(int j = i + d[i]; j <= i + d[i] * x[i]; j += d[i]) {
            dp[i] += dp[j];
        }
    }

    cout << dp[1] << '\n';
}

signed main() {
    //freopen("input.txt", "r", stdin);
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int t = 1;
    //cin >> t;
    while(t--) solve();
}

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