Submission #1315260

#	Time	Username	Problem	Language	Result	Execution time	Memory
1315260		lynessi	Trains (BOI24_trains)	C++20	8 / 100	1228 ms	804 KiB

Main

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

typedef vector<int> vi;
typedef long long ll;
typedef vector<ll> vll;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int N;
    int mod = 0x3B9ACA07;
    cin >> N;
    vll dp(N+1);
    dp[1] = 1;
    ll total = 1;
    for (int i=1; i<=N; i++) {
        ll d, x;
        cin >> d >> x;
        if (!d) continue;
        ll t = 1, s = i + d;
        while (t <= x && s <= N) {
            dp[s] += dp[i];
            s += d;
            t++;
            total += dp[i];
            total %= mod;
        }
    }
    cout << total << endl;
}

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