Submission #1111421

#	Time	Username	Problem	Language	Result	Execution time	Memory
1111421		justin271828	Trains (BOI24_trains)	C++14	8 / 100	277 ms	1552 KiB

Main

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

int main() {
    long long N;
    cin >> N;
    long long d[N];
    long long x[N];
    for (long long i = 0; i < N; i++) {
        cin >> d[i] >> x[i];
    }
    long long total[N];
    memset(total, 0, sizeof(total));
    total[0] = 1;
    for (long long i = 0; i < N; i++) {
        if (d[i] == 0) continue;
        for (long long j = 1; j <= x[i]; j++) {
            if (i+j*d[i] >= N) break;
            total[i+j*d[i]] += total[i];
        }
    }
    long long ans = 0;
    for (long long i: total) ans += i;
    cout << ans%1000000007;
    return 0;
}

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