제출 #1014746

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1014746		Warinchai	Trains (BOI24_trains)	C++14	0 / 100	93 ms	218492 KiB

Main

#include<bits/stdc++.h>
#define int long long
using namespace std;
const int s=317;
int dp[200005][s+5];
int sum1[200005][s+5];
int sum2[200005];
int ans=0;
int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;cin>>n;
    sum2[1]=1;
    for(int i=1;i<=n;i++){
        int d,x;cin>>d>>x;
        int tans=0;
        for(int j=1;j<=s;j++){
            if(i-j>=1)sum1[i][j]=sum1[i-j][j]+dp[i][j];
            tans+=sum1[i][j];
        }
        //cerr<<tans<<" ";
        tans+=sum2[i];
        //cerr<<tans<<"\n";
        ans+=tans;
        if(d==0||x==0)continue;
        if(d<=s){
            dp[i+d][d]+=tans;
            if(i+x*(d+1)<=n)dp[i+x*(d+1)][d]-=tans;
        }else{
            for(int j=1;j<=x&&i+j*d<=n;j++){
                sum2[i+j*d]+=tans;
            }
        }
    }
    cout<<ans;
}

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