Submission #1138617

#	Time	Username	Problem	Language	Result	Execution time	Memory
1138617		PlayVoltz	Trains (BOI24_trains)	C++20	0 / 100	2096 ms	2116 KiB

Main

#include <cstdio>
#include <stdio.h>
#include <stdbool.h>
#include <iostream>
#include <map>
#include <vector>
#include <climits>
#include <stack>
#include <string>
#include <queue>
#include <algorithm>
#include <set>
#include <unordered_set>
#include <unordered_map>
#include <cmath>
#include <cctype>
#include <bitset>
#include <iomanip>
#include <cstring>
#include <numeric>
#include <cassert>
using namespace std;

#define int long long
#define pii pair<int, int>
#define mp make_pair
#define pb push_back
#define fi first
#define se second

const int MOD = 1000000007;

int n;
vector<int> dp;
vector<pii> vect;

int train(int i){
	if (i>=n)return 0;
	if (dp[i]!=-1)return dp[i];
	int res=1;
	if (vect[i].fi)for (int j=1; j<=vect[i].se; ++j)res=(res+train(i+j*vect[i].fi))%MOD;
	return dp[i]=res;
}

int32_t main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin>>n;
	vect.resize(n);
	dp.resize(n, -1);
	for (int i=0; i<n; ++i)cin>>vect[i].fi>>vect[i].se;
	cout<<train(0);
}

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