Submission #65458657

Source Code Expand

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#include <bits/stdc++.h>
using namespace std;
int C[2005],A[2005],d[2005],p[2005];
bool v[2005];
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int N;cin>>N;
    for(int i=1;i<N;i++)cin>>C[i];
    for(int i=1;i<N;i++)cin>>A[i];
    const int INF=1e9;
    d[0]=0;
    for(int i=1;i<N;i++){
        d[i]=INF;
        for(int j=max(0,i-C[i]);j<i;j++){
            if(d[j]+1<d[i]){
                d[i]=d[j]+1;
                p[i]=j;
            }
        }
 
 
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#include <bits/stdc++.h>
using namespace std;
int C[2005],A[2005],d[2005],p[2005];
bool v[2005];

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int N;cin>>N;
    for(int i=1;i<N;i++)cin>>C[i];
    for(int i=1;i<N;i++)cin>>A[i];
    const int INF=1e9;
    d[0]=0;
    for(int i=1;i<N;i++){
        d[i]=INF;
        for(int j=max(0,i-C[i]);j<i;j++){
            if(d[j]+1<d[i]){
                d[i]=d[j]+1;
                p[i]=j;
            }
        }
    }
    for(int i=1;i<N;i++)if(A[i]){
        for(int u=i;u;u=p[u])v[u]=1;
    }
    cout<<count(v,v+N,1);
    return 0;
}

Submission Info

Judge Result