Submission #1234089

#	Time	Username	Problem	Language	Result	Execution time	Memory
1234089		Malix	Brought Down the Grading Server? (CEOI23_balance)	C++20	0 / 100	27 ms	4032 KiB

balance

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vii;
typedef pair<int,int> pi;
typedef vector<pi> pii;
typedef tuple<int,int,int> ti;
typedef vector<ll> li;
typedef vector<li> lii;
 
#define REP(i,a,b) for(int i=a;i<b;i++)
#define F first
#define S second
#define PB push_back
#define LSOne(s) ((s)&(-s))
#define all(x) (x).begin(),(x).end()
 
ll INF=1000000000000000010;
int inf=1e9+10;
ll M=1e9+7;

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n,s,t;cin>>n>>s>>t;
    vector<pi> a(n);
    REP(i,0,n)cin>>a[i].F>>a[i].S;
    REP(i,0,n)if(a[i].S<a[i].F)swap(a[i].F,a[i].S);
    sort(all(a));
    vector<pi> ans;
    vi L(t+1,0),R(t+1,0);
    REP(i,0,n){
        int x=a[i].F,y=a[i].S;
        if(L[x]>R[x]||L[y]<R[y]){
            ans.PB({y,x});
            L[y]++;R[x]++;
        }
        else{
            ans.PB({x,y});
            L[x]++;R[y]++;
        }
    }
    for(auto [u,v]:ans)cout<<u<<" "<<v<<"\n";
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 10
• Subtask 2-1: 0 / 15
• Subtask 2-2: 0 / 5
• Subtask 2-3: 0 / 5
• Subtask 3-1: 0 / 15
• Subtask 3-2: 0 / 5
• Subtask 3-3: 0 / 5
• Subtask 4-1: 0 / 20
• Subtask 4-2: 0 / 10
• Subtask 4-3: 0 / 10