Submission #1127044

#	Time	Username	Problem	Language	Result	Execution time	Memory
1127044		Requiem	Adriatic (CEOI13_adriatic)	C++20	50 / 100	2100 ms	121476 KiB

adriatic

#include<bits/stdc++.h>
//#define int long long
#define pb push_back
#define fast ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#define MOD 1000000007
#define inf 1e18
#define fi first
#define se second
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define FORD(i,a,b) for(int i=a;i>=b;i--)
#define sz(a) ((int)(a).size())
#define endl '\n'
#define pi 3.14159265359
#define TASKNAME "bc"
using namespace std;
template<typename T> bool maximize(T &res, const T &val) { if (res < val){ res = val; return true; }; return false; }
template<typename T> bool minimize(T &res, const T &val) { if (res > val){ res = val; return true; }; return false; }
typedef pair<int,int> ii;
typedef pair<int,ii> iii;
typedef vector<int> vi;

int n;

const int MAXN = 5e3 + 9;
int x[MAXN], y[MAXN], answer[MAXN];

int dist[5001][5001], g[5001][5001], num[5001];

void bfs(int s, int dist[]){
    queue<int> q;
    q.push(s);
    dist[s] = 0;
    while(!q.empty()){
        int u = q.front();
        answer[s] += dist[u];
        q.pop();

        for(int v = 0; v < num[u]; v++){

            if (minimize(dist[g[u][v]], dist[u] + 1)){
                q.push(g[u][v]);
            }
        }
    }
}

namespace subtask1{
    bool check(){
        return n <= 5000;
    }

    void solve(){
        FOR(i, 1, n){
            FOR(j, i + 1, n) {
                if ((x[i] < x[j] and y[i] < y[j]) or
                    (x[i] > x[j] and y[i] > y[j])){
                    g[i][num[i]++] = j;
                    g[j][num[j]++] = i;
                }
            }
        }
        memset(dist, 0x3f, sizeof(dist));

        FOR(i, 1, n){
            bfs(i, dist[i]);
        }

        FOR(i, 1, n){
            cout << answer[i] << endl;
        }
    }
}
main()
{
    fast;
    if (fopen(TASKNAME".inp","r")){
        freopen(TASKNAME".inp","r",stdin);
        freopen(TASKNAME".out","w",stdout);
    }
    cin >> n;
    FOR(i, 1, n){
        cin >>x[i] >> y[i];

    }
    if (subtask1::check()) return subtask1::solve(), 0;






}
/**
Warning:
Đọc sai đề???
Cận lmao
Code imple thiếu case nào không.
Limit.
**/

Compilation message (stderr)

adriatic.cpp:73:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   73 | main()
      | ^~~~
adriatic.cpp: In function 'int main()':
adriatic.cpp:77:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |         freopen(TASKNAME".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
adriatic.cpp:78:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |         freopen(TASKNAME".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 0 / 10
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20