Submission #2780

#	Time	Username	Problem	Language	Result	Execution time	Memory
2780		kk1401	속이기 (GA5_fake)	C++98	10 / 100	1000 ms	91200 KiB

fake

#include<stdio.h>

int n,d[2097153],cnt[2097153],ans,chk[2097153];

struct data
{
    int x,y;
}; data dy[2][2097153],cost[2][2097153];

void input()
{
    int i;
    scanf("%d",&n);
    for(i=1; i<=n; i++) scanf("%d",&d[i]);
}

int maxval(int a,int b)
{
    return a>b?a:b;
}

void process()
{
    int i,j,in;
    dy[1][++cnt[1]].x=cost[1][1].x=d[1];
    dy[1][cnt[1]].y=-1; cost[1][1].y=0;
    
    for(i=2; i<=n; i++){
        for(j=1; j<=cnt[i-1]; j++){
            //x에 넣는경우
            in = i%2;
            if(chk[dy[1-in][j].x^d[i]] != i){
                dy[in][++cnt[i]].x = dy[1-in][j].x^d[i];
                dy[in][cnt[i]].y = dy[1-in][j].y;
                cost[in][cnt[i]].y = cost[1-in][j].y;
                cost[in][cnt[i]].x = cost[1-in][j].x + d[i];
                chk[dy[1-in][j].x^d[i]]=i;
            }
            if(chk[dy[1-in][j].x] != i){
                //y에 넣는경우
                if(dy[1-in][j].y==-1) dy[in][++cnt[i]].y = d[i];
                else dy[in][++cnt[i]].y = dy[1-in][j].y^d[i];
                dy[in][cnt[i]].x = dy[1-in][j].x;
                cost[in][cnt[i]].y = cost[1-in][j].y + d[i];
                cost[in][cnt[i]].x = cost[1-in][j].x;
                chk[dy[1-in][j].x] = i;
            }
        }
    }
    for(i=1; i<=cnt[n]; i++) if(dy[n%2][i].x==dy[n%2][i].y) ans=maxval(ans,maxval(cost[n%2][i].x,cost[n%2][i].y));
}

void output()
{
    printf("%d\n",ans);
}
int main()
{
    input();
    process();
    output();
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40