Submission #272949

#	Time	Username	Problem	Language	Result	Execution time	Memory
272949		fivefourthreeone	Airline Route Map (JOI18_airline)	C++17	0 / 100	648 ms	22984 KiB

Alice

#include "Alicelib.h"
#include <bits/stdc++.h>
using namespace std;
void Alice(int n, int m, int* a, int* b) 
{
    vector<pair<int, int>> edges;
    for(int i = 0; i < n; ++i) for(int bit = 0; bit < 10; ++bit)
    {
        if(i & (1 << bit)) 
            edges.push_back(make_pair(i, n + bit));
    }
    
    for(int i = 0; i < 9; ++i) 
    {
        edges.push_back(make_pair(n + i, n + i + 1));
    }
    
    for(int i = 0; i < n + 10; ++i) 
    {
        edges.push_back(make_pair(i, n + 10));
    }
    
    for(int i = 0; i < 10; ++i) 
    {
        edges.push_back(make_pair(n + i, n + 11));
    }
    
    InitG(n + 12, m + edges.size());
    
    for(int i = 0; i < m; ++i) 
    {
        MakeG(i, a[i], b[i]);
    }

    for(int i = 0; i < edges.size(); ++i)
    {
        MakeG(i + m, edges[i].first, edges[i].second);
    }
}

Bob

#include "Boblib.h"
#include <bits/stdc++.h>
using namespace std;
void Bob(int v, int u, int* c, int* d) {
    vector<int> adj[1013];
    bool flag[1013];
    int bck[1013];
    memset(bck, 0, sizeof(bck));
    memset(flag, false, sizeof(flag));
    for(int i=0; i<v; ++i) {
        adj[c[i]].push_back(d[i]);
        adj[d[i]].push_back(c[i]);
    }
    int ten = -1;
    for(int i=0; i<v; ++i) {
        if(adj[i].size()==v-2) ten = i;
    }
    for(int u: adj[ten]) {
        flag[u] = true;
    }
    int eleven = -1;
    for(int i=0; i<v; ++i) {
        if(flag[i]||i==ten)continue;
        eleven = i;
    }
    vector<int> special[1013];
    memset(flag, false, sizeof(flag));
    for(int u: adj[eleven]) {
        for(int v: adj[ten]) {
            if(flag[v])continue;
            special[u].push_back(v);
            special[v].push_back(u);
        }
        flag[u] = true;
    }
    flag[ten] = flag[eleven] = true;
    int curr = -1;
    for(int i=0; i<v; ++i) {
        if(special[i].size()==1) {
            if(curr==-1||adj[curr].size()<adj[i].size()) {
                curr = i;
            }
        }
    }
    int prv = -1;
    for(int i=0; i<10; ++i) {
        for(int u: adj[curr]) {
            if(flag[u])continue;
            bck[u]|=1<<i;
        }
        int nxt = -1;
        for(int u: special[curr]) {
            if(u==prv)continue;
            nxt = u;
        }
        prv = curr;
        curr = nxt;
    }
    vector<pair<int, int>> ans;
    for(int i=0; i<u; ++i) {
        if(flag[c[i]]||flag[d[i]]) continue;
        ans.push_back({bck[c[i]], bck[d[i]]});
    }
    InitMap(v-12, ans.size());
    for(auto p: ans) {
        MakeMap(p.first, p.second);
    }
}

Compilation message (stderr)

Alice.cpp: In function 'void Alice(int, int, int*, int*)':
Alice.cpp:35:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for(int i = 0; i < edges.size(); ++i)
      |                    ~~^~~~~~~~~~~~~~

Bob.cpp: In function 'void Bob(int, int, int*, int*)':
Bob.cpp:16:25: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   16 |         if(adj[i].size()==v-2) ten = i;
      |            ~~~~~~~~~~~~~^~~~~

• Subtask 1: 0 / 22
• Subtask 2: 0 / 15
• Subtask 3: 0 / 63