oj.uz

Submission #1064814

# Submission time Handle Problem Language Result Execution time Memory
1064814 2024-08-18T18:06:17 Z beaconmc The Ties That Guide Us (CEOI23_incursion) C++17
12 / 100
 306 ms 40084 KB 
#include <vector>
#include "incursion.h"
#include <cstdio>
#include <bits/stdc++.h>
 
typedef long long ll;
#define FOR(i,x,y) for(ll i=x; i<y; i++)
#define FORNEG(i,x,y) for(ll i=x; i>y; i--)
 
using namespace std;



ll sub[50000];
vector<ll> edges[50000];
ll ancc[50000][30];
ll par[50000];
ll visited[50000];
ll depth[50000];
ll unsure[50000];

ll anc(ll a, ll x){
    if (a==1) return 1;
    if (x==0) return par[a];
    if (ancc[a][x] != -1) return ancc[a][x];
    return ancc[a][x] = anc(anc(a,x-1),x-1);
}

ll lca(ll a, ll b){
    if (depth[a] < depth[b]) swap(a,b);
    FORNEG(i,29,-1) if (depth[anc(a,i)] >= depth[b]) a = anc(a,i);
    if (a==b) return a;
    FORNEG(i,29,-1) if (anc(a,i) != anc(b,i)) a = anc(a,i), b = anc(b,i);
    return par[a];
}

void dfs(ll a, ll p, ll d){
    depth[a] = d;
    par[a] = p;
    sub[a] = 1;
    for (auto&i : edges[a]){
        if (i != p) dfs(i,a,d+1), sub[a] += sub[i];
    }
}


vector<int> mark(std::vector<std::pair<int, int>> F, int safe) {
    vector<int> ties(F.size()+1);
    FOR(i,0,50000) edges[i].clear(), sub[i] = 0, par[i] = -1, depth[i] = 0;
    FOR(i,0,50000) FOR(j,0,30) ancc[i][j] = -1;
    for (auto&i : F){
        edges[i.first].push_back(i.second);
        edges[i.second].push_back(i.first);
    }
    dfs(1, -1, 0);
    ll n = F.size()+1;
    FOR(i,1,n+1){
        if (safe == i){
            ties[i-1] = 2;
            continue;
        }
        vector<ll> idk;
        for (auto&k : edges[i]){
            if (k==par[i])idk.push_back(n-sub[i]);
            else idk.push_back(sub[k]);
        }

        sort(idk.begin(), idk.end());

        ll nxt = -1;
        ll sz = 0;
        for (auto&k : edges[i]){
            if (k != par[i] && lca(k, safe) == k) nxt = k;
        }
        if (nxt==-1) nxt = par[i];
        if (nxt == par[i]) sz = n-sub[i];
        else sz = sub[nxt];

        if (sz == idk[idk.size()-1]){
            ties[i-1] = 1;
        }else{
            ties[i-1] = 0;
        }
    }
    return ties;


}

void locate(std::vector<std::pair<int, int>> F, int curr, int t) {

    FOR(i,0,50000) edges[i].clear(), sub[i] = 0, par[i] = -1, depth[i] = 0, visited[i] = 0, unsure[i] = 0;
    FOR(i,0,50000) FOR(j,0,30) ancc[i][j] = -1;
    for (auto&i : F){
        edges[i.first].push_back(i.second);
        edges[i.second].push_back(i.first);
    }
    dfs(1, -1, 0);
    ll n = F.size()+1;


    ll here = t;
    while(here != 2){
        visited[curr] += 1;
        vector<vector<ll>> idk;
        for (auto&k : edges[curr]){
            if (par[curr] == k)idk.push_back({n-sub[curr], par[curr]});
            else idk.push_back({sub[k], k});
        }

        sort(idk.begin(), idk.end());


        if (idk.size()==2 && idk[0][0]==idk[1][0]) unsure[curr] = 1;
        if (idk.size()==3){
            if (here==1 && idk[2][0]==idk[1][0]) unsure[curr] =1;
            if (here==0 && idk[2][0]!=idk[1][0]) unsure[curr] = 1;
        }





        if (here==0){
            if (visited[idk[0][1]] && !unsure[idk[0][1]] && unsure[curr]) curr = idk[1][1], here = visit(curr);
            else curr = idk[0][1], here = visit(curr);
        }else{
            if (visited[idk[idk.size()-1][1]] && !unsure[idk[idk.size()-1][1]] && unsure[curr]){
                if (visited[idk[idk.size()-2][1]] && !unsure[idk[idk.size()-2][1]] && unsure[curr])curr = idk[idk.size()-3][1], here = visit(curr);
                else curr = idk[idk.size()-2][1], here = visit(curr);
            }
            else{
                curr = idk[idk.size()-1][1], here = visit(curr);
            }
        }
    }
    return;




}

Compilation message

interface.cpp: In function 'int main()':
interface.cpp:44:55: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   44 |     if(fread(T.data(), sizeof(int), 2 * N - 2, stdin) != 2 * N - 2) exit(0);
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
interface.cpp:50:33: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   50 |         int l = (numbers.size() == N ? N : 0);
      |                  ~~~~~~~~~~~~~~~^~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Partially correct 4 ms 30212 KB Partially correct

Subtask #1
12.0 / 30.0

# Verdict Execution time Memory Grader output
1 Partially correct 262 ms 38272 KB Partially correct
2 Partially correct 257 ms 38500 KB Partially correct
3 Partially correct 128 ms 39088 KB Partially correct
4 Partially correct 135 ms 39832 KB Partially correct
5 Partially correct 251 ms 39580 KB Partially correct
6 Partially correct 112 ms 39532 KB Partially correct
7 Partially correct 109 ms 38244 KB Partially correct
8 Partially correct 229 ms 38656 KB Partially correct
9 Partially correct 262 ms 39128 KB Partially correct
10 Partially correct 195 ms 38556 KB Partially correct
11 Partially correct 136 ms 39524 KB Partially correct
12 Partially correct 298 ms 38672 KB Partially correct
13 Partially correct 124 ms 38148 KB Partially correct
14 Partially correct 107 ms 38196 KB Partially correct
15 Partially correct 260 ms 39172 KB Partially correct
16 Partially correct 255 ms 40084 KB Partially correct
17 Partially correct 170 ms 37788 KB Partially correct
18 Partially correct 116 ms 38312 KB Partially correct
19 Partially correct 181 ms 37668 KB Partially correct
20 Partially correct 111 ms 39324 KB Partially correct
21 Partially correct 123 ms 38572 KB Partially correct
22 Partially correct 246 ms 38772 KB Partially correct
23 Partially correct 238 ms 38760 KB Partially correct
24 Partially correct 127 ms 38724 KB Partially correct
25 Partially correct 111 ms 39092 KB Partially correct
26 Partially correct 112 ms 38136 KB Partially correct
27 Partially correct 111 ms 38432 KB Partially correct
28 Partially correct 110 ms 38812 KB Partially correct
29 Partially correct 264 ms 39072 KB Partially correct
30 Partially correct 263 ms 38044 KB Partially correct
31 Partially correct 118 ms 39524 KB Partially correct
32 Partially correct 262 ms 38568 KB Partially correct
33 Partially correct 275 ms 39028 KB Partially correct
34 Partially correct 118 ms 37940 KB Partially correct
35 Partially correct 103 ms 37728 KB Partially correct
36 Partially correct 243 ms 38788 KB Partially correct
37 Partially correct 246 ms 38828 KB Partially correct
38 Partially correct 306 ms 39524 KB Partially correct
39 Partially correct 180 ms 39468 KB Partially correct
40 Partially correct 199 ms 39224 KB Partially correct
41 Partially correct 102 ms 39016 KB Partially correct
42 Partially correct 109 ms 38760 KB Partially correct
43 Partially correct 237 ms 38964 KB Partially correct
44 Partially correct 228 ms 38132 KB Partially correct
45 Partially correct 117 ms 38300 KB Partially correct
46 Partially correct 117 ms 38448 KB Partially correct
47 Partially correct 127 ms 39012 KB Partially correct
48 Partially correct 103 ms 37740 KB Partially correct
49 Partially correct 115 ms 39328 KB Partially correct

Subtask #2
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Partially correct 107 ms 35904 KB Partially correct
2 Incorrect 110 ms 35920 KB Not correct
3 Halted 0 ms 0 KB -

Subtask #3
0.0 / 40.0

# Verdict Execution time Memory Grader output
1 Partially correct 4 ms 30212 KB Partially correct
2 Partially correct 262 ms 38272 KB Partially correct
3 Partially correct 257 ms 38500 KB Partially correct
4 Partially correct 128 ms 39088 KB Partially correct
5 Partially correct 135 ms 39832 KB Partially correct
6 Partially correct 251 ms 39580 KB Partially correct
7 Partially correct 112 ms 39532 KB Partially correct
8 Partially correct 109 ms 38244 KB Partially correct
9 Partially correct 229 ms 38656 KB Partially correct
10 Partially correct 262 ms 39128 KB Partially correct
11 Partially correct 195 ms 38556 KB Partially correct
12 Partially correct 136 ms 39524 KB Partially correct
13 Partially correct 298 ms 38672 KB Partially correct
14 Partially correct 124 ms 38148 KB Partially correct
15 Partially correct 107 ms 38196 KB Partially correct
16 Partially correct 260 ms 39172 KB Partially correct
17 Partially correct 255 ms 40084 KB Partially correct
18 Partially correct 170 ms 37788 KB Partially correct
19 Partially correct 116 ms 38312 KB Partially correct
20 Partially correct 181 ms 37668 KB Partially correct
21 Partially correct 111 ms 39324 KB Partially correct
22 Partially correct 123 ms 38572 KB Partially correct
23 Partially correct 246 ms 38772 KB Partially correct
24 Partially correct 238 ms 38760 KB Partially correct
25 Partially correct 127 ms 38724 KB Partially correct
26 Partially correct 111 ms 39092 KB Partially correct
27 Partially correct 112 ms 38136 KB Partially correct
28 Partially correct 111 ms 38432 KB Partially correct
29 Partially correct 110 ms 38812 KB Partially correct
30 Partially correct 264 ms 39072 KB Partially correct
31 Partially correct 263 ms 38044 KB Partially correct
32 Partially correct 118 ms 39524 KB Partially correct
33 Partially correct 262 ms 38568 KB Partially correct
34 Partially correct 275 ms 39028 KB Partially correct
35 Partially correct 118 ms 37940 KB Partially correct
36 Partially correct 103 ms 37728 KB Partially correct
37 Partially correct 243 ms 38788 KB Partially correct
38 Partially correct 246 ms 38828 KB Partially correct
39 Partially correct 306 ms 39524 KB Partially correct
40 Partially correct 180 ms 39468 KB Partially correct
41 Partially correct 199 ms 39224 KB Partially correct
42 Partially correct 102 ms 39016 KB Partially correct
43 Partially correct 109 ms 38760 KB Partially correct
44 Partially correct 237 ms 38964 KB Partially correct
45 Partially correct 228 ms 38132 KB Partially correct
46 Partially correct 117 ms 38300 KB Partially correct
47 Partially correct 117 ms 38448 KB Partially correct
48 Partially correct 127 ms 39012 KB Partially correct
49 Partially correct 103 ms 37740 KB Partially correct
50 Partially correct 115 ms 39328 KB Partially correct
51 Partially correct 107 ms 35904 KB Partially correct
52 Incorrect 110 ms 35920 KB Not correct
53 Halted 0 ms 0 KB -