Submission #16524

#	Time	Username	Problem	Language	Result	Execution time	Memory
16524		eaststar	Friend (IOI14_friend)	C++14	100 / 100	26 ms	3036 KiB

friend

#include "friend.h"
#include <algorithm>
using namespace std;
int a[100010],b[100010];
int findSample(int n,int *c,int *h,int *p){
    int i;
    for(i=0;i<n;++i)a[i]=c[i];
    for(;--i;){
        if(!p[i]){
            a[h[i]]+=b[i];
            b[h[i]]+=max(a[i],b[i]);
        }
        else if(p[i]==1){
            a[h[i]]=max(a[h[i]]+max(a[i],b[i]),b[h[i]]+a[i]);
            b[h[i]]+=b[i];
        }
        else{
            a[h[i]]=max(a[h[i]]+b[i],b[h[i]]+a[i]);
            b[h[i]]+=b[i];
        }
    }
    return max(a[0],b[0]);
}

• Subtask 1: 11 / 11
• Subtask 2: 8 / 8
• Subtask 3: 8 / 8
• Subtask 4: 19 / 19
• Subtask 5: 23 / 23
• Subtask 6: 31 / 31