Submission #1063148

#	Time	Username	Problem	Language	Result	Execution time	Memory
1063148		anton	Trains (BOI24_trains)	C++17	21 / 100	200 ms	740 KiB

Main

#include<bits/stdc++.h>

using namespace std;

#define int long long 
#define pii pair<int, int>
const int MAX_N = 1e4;
const int MOD = 1e9+7;
int N;

int d[MAX_N];
int x[MAX_N];
int dp[MAX_N];


signed main(){
    cin>>N;

    for(int i = 0; i<N; i++){
        cin>>d[i]>>x[i];
    }

    for(int i = N-1; i>=0; i--){
        dp[i] =1;
        if(d[i] != 0){
            for(int j = i+d[i]; j<=min(N-1, i+d[i]*x[i]); j+=d[i]){
                dp[i] =(dp[i]+dp[j])%MOD;
            }
        }
    }

    cout<<dp[0]<<endl;
}

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