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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#819328#9877. Segment Treerqoi031WA 20ms3660kbC++201.8kb2024-12-18 15:00:452024-12-18 15:00:45

Judging History

你现在查看的是最新测评结果

  • [2024-12-18 15:00:45]
  • 评测
  • 测评结果:WA
  • 用时:20ms
  • 内存:3660kb
  • [2024-12-18 15:00:45]
  • 提交

answer

#include<stdio.h>
#include<algorithm>
template<int N>
struct segment_tree {
    int len;
    int val[1<<N+1|1];
    int dis[1<<N+1|1];
    void push_up(const int &x) {
        dis[x]=std::min(dis[x<<1]+dis[x<<1|1],val[x]);
    }
    void build(const int &n) {
        len=1<<n;
        std::copy(val+len,val+(len<<1),dis+len);
        for(int i=len-1;i!=0;i--) {
            push_up(i);
        }
    }
    void modify(int x,const int &y) {
        val[x]=y;
        dis[x]=x<len?std::min(dis[x<<1]+dis[x<<1|1],y):y;
        while(x!=1) {
            push_up(x>>=1);
        }
    }
    int query(int x,int y) {
        if(x==y) {
            return 0;
        }
        if(x>y) {
            std::swap(x,y);
        }
        x|=len,y|=len;
        int dx[2]{0,val[x]},dy[2]{0,val[y]};
        if(y==len) {
            if(x==(len<<1)-1) {
                return val[x];
            }
            y=(len<<1)-1,dy[0]=val[y],dy[1]=0;
        }
        const auto go([&]()->void {
            dx[x&1^1]=std::min(dx[x&1^1]+dis[x^1],dx[x&1]+val[x>>1]);
            dy[y&1^1]=std::min(dy[y&1^1]+dis[y^1],dy[y&1]+val[y>>1]);
            x>>=1,y>>=1;
        });
        while(x^y^1) {
            go();
        }
        int res{dx[1]+dy[0]};
        go();
        while(x!=0) {
            res=std::min(res,dx[0]+dy[0]);
            go();
        }
        return res;
    }
};
segment_tree<18> sgt;
int main() {
    int n;
    scanf("%d",&n);
    for(int i=1;i!=1<<n+1;i++) {
        scanf("%d",sgt.val+i);
    }
    sgt.build(n);
    int q;
    scanf("%d",&q);
    for(int i=1;i<=q;i++) {
        int op,x,y;
        scanf("%d%d%d",&op,&x,&y);
        if(op==1) {
            sgt.modify(x,y);
        }
        else {
            printf("%d\n",sgt.query(x,y));
        }
    }
    return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 3660kb

input:

3
7 1 14 3 9 4 8 2 6 5 5 13 8 2 3
10
2 0 1
2 0 4
2 4 6
2 4 8
2 3 5
1 6 30
2 3 5
2 4 6
1 1 10000000
2 0 8

output:

2
1
4
8
17
18
13
15

result:

ok 8 tokens

Test #2:

score: -100
Wrong Answer
time: 20ms
memory: 3640kb

input:

1
7914575 2436426 4979445
199989
1 1 6190629
1 1 1407775
1 1 2804784
1 2 2631932
1 1 3078537
1 3 286918
1 2 3238506
1 3 3361868
1 2 9296263
1 3 4836991
1 3 2177068
1 3 4291757
1 1 594328
1 2 8996221
1 1 5531545
1 3 3575467
1 3 3206504
1 1 8344965
1 3 6045895
2 0 2
1 2 6248153
1 1 5797489
1 1 9766466...

output:

8344965
5684734
9288151
2512448
130126
7751092
7834895
6363152
6668726
4380822
8809904
4042733
8566868
8653391
3654574
7617913
8583126
8202706
4099069
2539201
7188565
8465921
4517278
1913351
7400947
5104744
1759308
6081288
3559555
3409112
3714298
8937580
4704960
5280672
9424416
1622556
2599805
18330...

result:

wrong answer 3rd words differ - expected: '2756417', found: '9288151'