oj.uz

Submission #1065007

# Submission time Handle Problem Language Result Execution time Memory
1065007 2024-08-18T21:18:00 Z beaconmc The Ties That Guide Us (CEOI23_incursion) C++17
0 / 100
 84 ms 14368 KB 
#include "incursion.h"

#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 par[50000];
ll visited[50000];
ll depth[50000];
ll unsure[50000];
ll n;



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];
    }
}

ll centfind(ll a, ll p){
    for (auto&i : edges[a]){
        if (i!=p && sub[i] > n/2) return centfind(i, a);
    }
    return a;
}





vector<int> mark(std::vector<std::pair<int, int>> F, int safe) {
    n = (ll)F.size()+1;
    vector<int> ties(n);
    FOR(i,0,50000) edges[i].clear(), sub[i] = 0, par[i] = -1, depth[i] = 0;

    for (auto&i : F){
        edges[i.first].push_back(i.second);
        edges[i.second].push_back(i.first);
    }
    dfs(1, -1, 0);

    ll cent = centfind(1, -1);

    dfs(cent, -1, 0);


    while (safe != -1){
        ties[safe-1] = 1;
        safe = par[safe];
    }

    return ties;


}

bool cmp(ll a, ll b){
    return sub[a] < sub[b];
}

void locate(std::vector<std::pair<int, int>> F, int curr, int t) {
    n = (ll)F.size()+1;

    FOR(i,0,50000) edges[i].clear(), sub[i] = 0, par[i] = -1, depth[i] = 0;

    for (auto&i : F){
        edges[i.first].push_back(i.second);
        edges[i.second].push_back(i.first);
    }
    dfs(1, -1, 0);

    ll cent = centfind(1, -1);

    dfs(cent, -1, 0);
    visited[curr] = 1;

}

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 Incorrect 2 ms 6400 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #1
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 84 ms 14368 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #2
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 11932 KB Correct
2 Incorrect 79 ms 12148 KB Not correct
3 Halted 0 ms 0 KB -

Subtask #3
0.0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 6400 KB Not correct
2 Halted 0 ms 0 KB -