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Submission #427894

# Submission time Handle Problem Language Result Execution time Memory
427894 2021-06-15T04:16:57 Z 반딧불(#7617) Corporate life (after hostile takover) (CPSPC17_corpo) C++17
100 / 100
 373 ms 47832 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

struct Fenwick{
    int n;
    int tree[200002];

    void add(int x, int y){
        while(x<=n){
            tree[x] += y;
            x += x&-x;
        }
    }
    int sum(int x){
        int ret = 0;
        while(x){
            ret += tree[x];
            x -= x&-x;
        }
        return ret;
    }
    int sum(int l, int r){
        return sum(r) - sum(l-1);
    }
} tree;

struct Query{
    int x1, x2, y, idx, w;
    Query(){}
    Query(int x1, int x2, int y, int idx, int w): x1(x1), x2(x2), y(y), idx(idx), w(w){}
    bool operator<(const Query &r)const{
        return y<r.y;
    }
};

int n;
int par1[200002], par2[200002];
vector<int> link1[200002], link2[200002];
int in1[200002], in2[200002], inCnt;
int out1[200002], out2[200002];
int ans[200002];
int arr[200002];

void dfs1(int x){
    in1[x] = ++inCnt;
    out1[x] = in1[x];
    for(auto y: link1[x]){
        dfs1(y);
        out1[x] = out1[y];
    }
}
void dfs2(int x){
    in2[x] = ++inCnt;
    out2[x] = in2[x];
    for(auto y: link2[x]){
        dfs2(y);
        out2[x] = out2[y];
    }
}

int main(){
    scanf("%d", &n);
    for(int i=2; i<=n; i++){
        scanf("%d", &par1[i]);
        link1[par1[i]].push_back(i);
    }
    for(int i=2; i<=n; i++){
        scanf("%d", &par2[i]);
        link2[par2[i]].push_back(i);
    }

    dfs1(1);
    inCnt = 0;
    dfs2(1);

    vector<Query> vec;
    for(int i=1; i<=n; i++){
        arr[in1[i]] = in2[i];
        vec.push_back(Query(in2[i]+1, out2[i], in1[i], i, -1));
        vec.push_back(Query(in2[i]+1, out2[i], out1[i], i, 1));
    }

    sort(vec.begin(), vec.end());
    int pnt = 0;

    tree.n = n;
    for(int i=1; i<=n; i++){
        tree.add(arr[i], 1);
        while(pnt < (int)vec.size() && vec[pnt].y <= i){
            ans[vec[pnt].idx] += vec[pnt].w * tree.sum(vec[pnt].x1, vec[pnt].x2);
            pnt++;
        }
    }

    for(int i=1; i<=n; i++){
        printf("%d ", ans[i]);
    }
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:65:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
Main.cpp:67:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   67 |         scanf("%d", &par1[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~
Main.cpp:71:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |         scanf("%d", &par2[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9676 KB Output is correct
2 Correct 7 ms 9676 KB Output is correct
3 Correct 8 ms 9680 KB Output is correct
4 Correct 8 ms 9676 KB Output is correct
5 Correct 7 ms 9676 KB Output is correct
6 Correct 7 ms 9676 KB Output is correct
7 Correct 6 ms 9676 KB Output is correct
8 Correct 8 ms 9804 KB Output is correct
9 Correct 7 ms 9804 KB Output is correct
10 Correct 7 ms 9804 KB Output is correct
11 Correct 7 ms 9804 KB Output is correct
12 Correct 8 ms 9932 KB Output is correct
13 Correct 7 ms 9932 KB Output is correct
14 Correct 7 ms 9932 KB Output is correct
15 Correct 9 ms 10060 KB Output is correct
16 Correct 9 ms 10076 KB Output is correct
17 Correct 9 ms 10060 KB Output is correct
18 Correct 8 ms 10060 KB Output is correct
19 Correct 8 ms 10124 KB Output is correct
20 Correct 8 ms 10156 KB Output is correct
21 Correct 8 ms 10160 KB Output is correct

Subtask #2
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9676 KB Output is correct
2 Correct 7 ms 9676 KB Output is correct
3 Correct 8 ms 9680 KB Output is correct
4 Correct 8 ms 9676 KB Output is correct
5 Correct 7 ms 9676 KB Output is correct
6 Correct 7 ms 9676 KB Output is correct
7 Correct 6 ms 9676 KB Output is correct
8 Correct 8 ms 9804 KB Output is correct
9 Correct 7 ms 9804 KB Output is correct
10 Correct 7 ms 9804 KB Output is correct
11 Correct 7 ms 9804 KB Output is correct
12 Correct 8 ms 9932 KB Output is correct
13 Correct 7 ms 9932 KB Output is correct
14 Correct 7 ms 9932 KB Output is correct
15 Correct 9 ms 10060 KB Output is correct
16 Correct 9 ms 10076 KB Output is correct
17 Correct 9 ms 10060 KB Output is correct
18 Correct 8 ms 10060 KB Output is correct
19 Correct 8 ms 10124 KB Output is correct
20 Correct 8 ms 10156 KB Output is correct
21 Correct 8 ms 10160 KB Output is correct
22 Correct 124 ms 23244 KB Output is correct
23 Correct 138 ms 24756 KB Output is correct
24 Correct 145 ms 26592 KB Output is correct
25 Correct 140 ms 24020 KB Output is correct
26 Correct 145 ms 28716 KB Output is correct
27 Correct 182 ms 28764 KB Output is correct
28 Correct 138 ms 28708 KB Output is correct
29 Correct 297 ms 35836 KB Output is correct
30 Correct 323 ms 38656 KB Output is correct
31 Correct 336 ms 42084 KB Output is correct
32 Correct 333 ms 37184 KB Output is correct
33 Correct 323 ms 46128 KB Output is correct
34 Correct 347 ms 46020 KB Output is correct
35 Correct 333 ms 46176 KB Output is correct
36 Correct 316 ms 36528 KB Output is correct
37 Correct 372 ms 39652 KB Output is correct
38 Correct 322 ms 43368 KB Output is correct
39 Correct 329 ms 38064 KB Output is correct
40 Correct 331 ms 47832 KB Output is correct
41 Correct 359 ms 47768 KB Output is correct
42 Correct 373 ms 47744 KB Output is correct