Submission #1103736

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1103736	2024-10-21T15:29:20 Z	salmon	Regions (IOI09_regions)	C++14	55 / 100	2463 ms	131072 KB

regions

#include <bits/stdc++.h>
using namespace std;

#define pb(x) push_back(x)

int N;
int K,Q;
int parent[200100];
vector<int> children[200100];
int lst[200100];
vector<int> kv[200100];
vector<int> pov[200100];
vector<int> prv[200100];
int pre[200100];
int invpre[200100];
int post[200100];
int cont = 0;
const int B = 501;
long long int ans[200100/B + 100][25100];
long long int ans1[25100][200100/B + 100];
vector<int> f;
long long int fk[25100][200100/B + 100];
map<int,int> mep;
int h1,h;

void dfs(int i){
    pre[i] = cont;
    invpre[cont] = i;
    cont++;

    for(int j  : children[i]){
        dfs(j);
    }

    post[i] = cont - 1;
}

void fil(int i){
    for(pair<int,int> ii : mep){
        ans[ii.first][lst[i]] += ii.second;
    }

    if(kv[lst[i]].size() >= B){
        mep[lst[i]]++;
    }

    for(int j : children[i]){
        fil(j);
    }

    if(kv[lst[i]].size() >= B){
        mep[lst[i]]--;
    }
}

int main(){

    scanf(" %d",&N);
    scanf(" %d",&K);
    scanf(" %d",&Q);

    parent[1] = -1;
    scanf(" %d",&lst[1]);

    kv[lst[1]].push_back(1);

    for(int i = 2; i <= N; i++){
        scanf(" %d",&parent[i]);
        scanf(" %d",&lst[i]);

        children[parent[i]].pb(i);

        kv[lst[i]].push_back(i);
    }

    dfs(1);
//printf("s %d",pre[1]);
    for(int i = 1; i <= K; i++){
        if(!kv[i].empty()){
            for(int j : kv[i]){
                pov[i].push_back(post[j]);
                prv[i].push_back(pre[j]);
            }
            sort(pov[i].begin(),pov[i].end());
            sort(prv[i].begin(),prv[i].end());

            pov[i].push_back(N + 5);
            prv[i].push_back(N + 5);
        }

        if(kv[i].size() >= B){
            f.push_back(i);
        }
    }

    for(int i = 0; i < N; i++){
        for(int j = 0; j < f.size(); j++){
            fk[i][j] = 0;
        }
    }

    for(int i = 0; i < N; i++){
        if(i != 0){
            for(int j = 0; j < f.size(); j++){
                fk[i][j] = fk[i - 1][j];
            }
        }

        if(kv[invpre[i]].size() >= B){
            int h = invpre[i];

            int in = lower_bound(f.begin(),f.end(),h) - f.begin();

            fk[i][in]++;
        }
    }

    for(int i = 1; i <= K; i++){
        for(int j = 0; j < f.size(); j++){
            ans1[i][j] = 0;
        }
    }

    for(int j = 0; j < f.size(); j++){
        for(int i = 1; i <= K; i++){
            ans[j][i] = 0;
        }
    }

    for(int i = 0; i < N; i++){
        for(int j = 0; j < f.size(); j++){
            int in = invpre[i];

            ans1[lst[in]][j] += fk[post[in]][j] - fk[pre[in]][j];
        }
    }

    fil(1);

    /*for(int i = 1; i <= K; i++){
        for(int j : prv[i]){
            printf("%d ",j);
        }
        printf("\n");
    }
    for(int i = 1; i <= K; i++){
        for(int j : pov[i]){
            printf("%d ",j);
        }
        printf("\n");
    }*/

    for(int i = 0; i < Q; i++){
        scanf(" %d",&h);
        scanf(" %d",&h1);

        if(kv[h].size() == 0 || kv[h1].size() == 0){
            printf("0\n");
        }
        else if(kv[h].size() >= B){
            int in = lower_bound(f.begin(),f.end(),h) - f.begin();
            printf("%d\n",ans[in][h1]);
        }
        else if(kv[h1].size() >= B){
            int in = lower_bound(f.begin(),f.end(),h1) - f.begin();
            printf("%d\n",ans1[h][in]);
        }
        else{

            int it = 0;
            int it1 = 0;
            long long int V = 0;
            int v = 0;

            for(int i = 0; i < prv[h1].size() + prv[h].size() - 2; i++){
                if(prv[h1][it1] <= prv[h][it]){
                    v++;
                    it1++;
                }
                else{
                    V -= v;
                    it++;
                }
            }

            it = 0;
            it1 = 0;
            v = 0;

            for(int i = 0; i < prv[h1].size() + pov[h].size() - 2; i++){
                if(prv[h1][it1] <= pov[h][it]){
                    v++;
                    it1++;
                }
                else{
                    V += v;
                    it++;
                }
            }

            printf("%d\n",V);
        }
        fflush(stdout);
    }
}
/*
6 3 4
1
1 2
1 3
2 3
2 3
5 1
*/

Compilation message

regions.cpp: In function 'int main()':
regions.cpp:97:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   97 |         for(int j = 0; j < f.size(); j++){
      |                        ~~^~~~~~~~~~
regions.cpp:104:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  104 |             for(int j = 0; j < f.size(); j++){
      |                            ~~^~~~~~~~~~
regions.cpp:119:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  119 |         for(int j = 0; j < f.size(); j++){
      |                        ~~^~~~~~~~~~
regions.cpp:124:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  124 |     for(int j = 0; j < f.size(); j++){
      |                    ~~^~~~~~~~~~
regions.cpp:131:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  131 |         for(int j = 0; j < f.size(); j++){
      |                        ~~^~~~~~~~~~
regions.cpp:162:22: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
  162 |             printf("%d\n",ans[in][h1]);
      |                     ~^    ~~~~~~~~~~~
      |                      |              |
      |                      int            long long int
      |                     %lld
regions.cpp:166:22: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
  166 |             printf("%d\n",ans1[h][in]);
      |                     ~^    ~~~~~~~~~~~
      |                      |              |
      |                      int            long long int
      |                     %lld
regions.cpp:175:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  175 |             for(int i = 0; i < prv[h1].size() + prv[h].size() - 2; i++){
      |                            ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
regions.cpp:190:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  190 |             for(int i = 0; i < prv[h1].size() + pov[h].size() - 2; i++){
      |                            ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
regions.cpp:201:22: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
  201 |             printf("%d\n",V);
      |                     ~^    ~
      |                      |    |
      |                      int  long long int
      |                     %lld
regions.cpp:58:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   58 |     scanf(" %d",&N);
      |     ~~~~~^~~~~~~~~~
regions.cpp:59:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |     scanf(" %d",&K);
      |     ~~~~~^~~~~~~~~~
regions.cpp:60:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |     scanf(" %d",&Q);
      |     ~~~~~^~~~~~~~~~
regions.cpp:63:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |     scanf(" %d",&lst[1]);
      |     ~~~~~^~~~~~~~~~~~~~~
regions.cpp:68:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   68 |         scanf(" %d",&parent[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~
regions.cpp:69:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   69 |         scanf(" %d",&lst[i]);
      |         ~~~~~^~~~~~~~~~~~~~~
regions.cpp:154:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  154 |         scanf(" %d",&h);
      |         ~~~~~^~~~~~~~~~
regions.cpp:155:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  155 |         scanf(" %d",&h1);
      |         ~~~~~^~~~~~~~~~~

Subtask #1

15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	23036 KB	Output is correct
2	Correct	4 ms	22864 KB	Output is correct
3	Correct	5 ms	22864 KB	Output is correct
4	Correct	7 ms	22864 KB	Output is correct
5	Correct	10 ms	22996 KB	Output is correct
6	Correct	18 ms	23120 KB	Output is correct
7	Correct	29 ms	22864 KB	Output is correct
8	Correct	30 ms	23120 KB	Output is correct
9	Correct	37 ms	23632 KB	Output is correct
10	Correct	64 ms	23376 KB	Output is correct
11	Correct	91 ms	23888 KB	Output is correct
12	Correct	108 ms	24400 KB	Output is correct
13	Correct	139 ms	23888 KB	Output is correct
14	Correct	174 ms	24656 KB	Output is correct
15	Correct	185 ms	29136 KB	Output is correct

Subtask #2

40.0 / 85.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	51 ms	131072 KB	Execution killed with signal 9
2	Runtime error	45 ms	131072 KB	Execution killed with signal 9
3	Runtime error	56 ms	131072 KB	Execution killed with signal 9
4	Correct	230 ms	24912 KB	Output is correct
5	Correct	296 ms	27472 KB	Output is correct
6	Correct	691 ms	26356 KB	Output is correct
7	Correct	998 ms	27472 KB	Output is correct
8	Correct	821 ms	35660 KB	Output is correct
9	Correct	1458 ms	34396 KB	Output is correct
10	Correct	1957 ms	42824 KB	Output is correct
11	Correct	2463 ms	33608 KB	Output is correct
12	Runtime error	104 ms	131072 KB	Execution killed with signal 9
13	Runtime error	95 ms	131072 KB	Execution killed with signal 9
14	Runtime error	117 ms	131072 KB	Execution killed with signal 9
15	Runtime error	106 ms	131072 KB	Execution killed with signal 9
16	Runtime error	95 ms	131072 KB	Execution killed with signal 9
17	Runtime error	108 ms	131072 KB	Execution killed with signal 9