제출 #602893

#제출 시각아이디문제언어결과실행 시간메모리
602893mosiashvililukaFriend (IOI14_friend)C++14
100 / 100
23 ms4192 KiB
#include "friend.h"
#include<bits/stdc++.h>
using namespace std;
int a,b,c,d,e,i,j,ii,jj,zx,xc,f[100009],H[100009],dp[100009][2],P[100009];
int findSample(int Nn,int Conf[],int HS[],int PROT[]){
    a=Nn;
    for(i=1; i<=a; i++) f[i]=Conf[i-1];
    for(i=2; i<=a; i++) H[i]=HS[i-1]+1;
    for(i=2; i<=a; i++) P[i]=PROT[i-1];
    for(i=1; i<=a; i++){
        dp[i][0]=f[i];dp[i][1]=0;
    }
    for(i=a; i>=2; i--){
        c=H[i];d=i;
        //cout<<c<<" "<<d<<"      "<<dp[c][0]<<" "<<dp[c][1]<<" "<<dp[d][0]<<" "<<dp[d][1]<<"\n";
        if(P[i]==0){
            zx=dp[c][0]+dp[d][1];
            xc=dp[c][1]+max(dp[d][0],dp[d][1]);
            dp[c][0]=zx;dp[c][1]=xc;
            //cout<<dp[c][0]<<" "<<dp[c][1]<<"\n";
            continue;
        }
        if(P[i]==1){
            zx=max(dp[c][0]+dp[d][0],max(dp[c][0]+dp[d][1],dp[d][0]+dp[c][1]));
            xc=dp[c][1]+dp[d][1];
            dp[c][0]=zx;dp[c][1]=xc;
            //cout<<dp[c][0]<<" "<<dp[c][1]<<"\n";
            continue;
        }
        if(P[i]==2){
            zx=max(dp[c][0]+dp[d][1],dp[d][0]+dp[c][1]);
            xc=dp[c][1]+dp[d][1];
            dp[c][0]=zx;dp[c][1]=xc;
            //cout<<dp[c][0]<<" "<<dp[c][1]<<"\n";
            continue;
        }
    }
    return max(dp[1][0],dp[1][1]);
}
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