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Submission #1064748

# Submission time Handle Problem Language Result Execution time Memory
1064748 2024-08-18T17:22:16 Z beaconmc The Ties That Guide Us (CEOI23_incursion) C++17
12 / 100
 326 ms 40044 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]) 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 30208 KB Partially correct

Subtask #1
12.0 / 30.0

# Verdict Execution time Memory Grader output
1 Partially correct 244 ms 38556 KB Partially correct
2 Partially correct 247 ms 38432 KB Partially correct
3 Partially correct 139 ms 39092 KB Partially correct
4 Partially correct 131 ms 39584 KB Partially correct
5 Partially correct 228 ms 39504 KB Partially correct
6 Partially correct 117 ms 39580 KB Partially correct
7 Partially correct 112 ms 38500 KB Partially correct
8 Partially correct 235 ms 38624 KB Partially correct
9 Partially correct 240 ms 39380 KB Partially correct
10 Partially correct 210 ms 38504 KB Partially correct
11 Partially correct 128 ms 39536 KB Partially correct
12 Partially correct 279 ms 38676 KB Partially correct
13 Partially correct 110 ms 38232 KB Partially correct
14 Partially correct 109 ms 38244 KB Partially correct
15 Partially correct 282 ms 39152 KB Partially correct
16 Partially correct 255 ms 40044 KB Partially correct
17 Partially correct 152 ms 38076 KB Partially correct
18 Partially correct 117 ms 38312 KB Partially correct
19 Partially correct 185 ms 37840 KB Partially correct
20 Partially correct 111 ms 39516 KB Partially correct
21 Partially correct 112 ms 38556 KB Partially correct
22 Partially correct 275 ms 38696 KB Partially correct
23 Partially correct 236 ms 38772 KB Partially correct
24 Partially correct 127 ms 38248 KB Partially correct
25 Partially correct 114 ms 38976 KB Partially correct
26 Partially correct 115 ms 38308 KB Partially correct
27 Partially correct 105 ms 38428 KB Partially correct
28 Partially correct 104 ms 38752 KB Partially correct
29 Partially correct 238 ms 38812 KB Partially correct
30 Partially correct 250 ms 38036 KB Partially correct
31 Partially correct 108 ms 39708 KB Partially correct
32 Partially correct 286 ms 38932 KB Partially correct
33 Partially correct 282 ms 39008 KB Partially correct
34 Partially correct 106 ms 38092 KB Partially correct
35 Partially correct 113 ms 37792 KB Partially correct
36 Partially correct 244 ms 39028 KB Partially correct
37 Partially correct 243 ms 38828 KB Partially correct
38 Partially correct 326 ms 39480 KB Partially correct
39 Partially correct 152 ms 39844 KB Partially correct
40 Partially correct 212 ms 39324 KB Partially correct
41 Partially correct 107 ms 39068 KB Partially correct
42 Partially correct 111 ms 39016 KB Partially correct
43 Partially correct 242 ms 38928 KB Partially correct
44 Partially correct 227 ms 37804 KB Partially correct
45 Partially correct 117 ms 38424 KB Partially correct
46 Partially correct 114 ms 38496 KB Partially correct
47 Partially correct 131 ms 39144 KB Partially correct
48 Partially correct 111 ms 37844 KB Partially correct
49 Partially correct 113 ms 39280 KB Partially correct

Subtask #2
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Partially correct 96 ms 35692 KB Partially correct
2 Incorrect 111 ms 35692 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 30208 KB Partially correct
2 Partially correct 244 ms 38556 KB Partially correct
3 Partially correct 247 ms 38432 KB Partially correct
4 Partially correct 139 ms 39092 KB Partially correct
5 Partially correct 131 ms 39584 KB Partially correct
6 Partially correct 228 ms 39504 KB Partially correct
7 Partially correct 117 ms 39580 KB Partially correct
8 Partially correct 112 ms 38500 KB Partially correct
9 Partially correct 235 ms 38624 KB Partially correct
10 Partially correct 240 ms 39380 KB Partially correct
11 Partially correct 210 ms 38504 KB Partially correct
12 Partially correct 128 ms 39536 KB Partially correct
13 Partially correct 279 ms 38676 KB Partially correct
14 Partially correct 110 ms 38232 KB Partially correct
15 Partially correct 109 ms 38244 KB Partially correct
16 Partially correct 282 ms 39152 KB Partially correct
17 Partially correct 255 ms 40044 KB Partially correct
18 Partially correct 152 ms 38076 KB Partially correct
19 Partially correct 117 ms 38312 KB Partially correct
20 Partially correct 185 ms 37840 KB Partially correct
21 Partially correct 111 ms 39516 KB Partially correct
22 Partially correct 112 ms 38556 KB Partially correct
23 Partially correct 275 ms 38696 KB Partially correct
24 Partially correct 236 ms 38772 KB Partially correct
25 Partially correct 127 ms 38248 KB Partially correct
26 Partially correct 114 ms 38976 KB Partially correct
27 Partially correct 115 ms 38308 KB Partially correct
28 Partially correct 105 ms 38428 KB Partially correct
29 Partially correct 104 ms 38752 KB Partially correct
30 Partially correct 238 ms 38812 KB Partially correct
31 Partially correct 250 ms 38036 KB Partially correct
32 Partially correct 108 ms 39708 KB Partially correct
33 Partially correct 286 ms 38932 KB Partially correct
34 Partially correct 282 ms 39008 KB Partially correct
35 Partially correct 106 ms 38092 KB Partially correct
36 Partially correct 113 ms 37792 KB Partially correct
37 Partially correct 244 ms 39028 KB Partially correct
38 Partially correct 243 ms 38828 KB Partially correct
39 Partially correct 326 ms 39480 KB Partially correct
40 Partially correct 152 ms 39844 KB Partially correct
41 Partially correct 212 ms 39324 KB Partially correct
42 Partially correct 107 ms 39068 KB Partially correct
43 Partially correct 111 ms 39016 KB Partially correct
44 Partially correct 242 ms 38928 KB Partially correct
45 Partially correct 227 ms 37804 KB Partially correct
46 Partially correct 117 ms 38424 KB Partially correct
47 Partially correct 114 ms 38496 KB Partially correct
48 Partially correct 131 ms 39144 KB Partially correct
49 Partially correct 111 ms 37844 KB Partially correct
50 Partially correct 113 ms 39280 KB Partially correct
51 Partially correct 96 ms 35692 KB Partially correct
52 Incorrect 111 ms 35692 KB Not correct
53 Halted 0 ms 0 KB -