Submission #129644

#	Time	Username	Problem	Language	Result	Execution time	Memory
129644		Sorting	Game (IOI14_game)	C++14	100 / 100	554 ms	27788 KiB

game

#include <bits/stdc++.h>

using namespace std;

const int N = 1507;

int n;
int par[N];
vector<int> el[N];
bool e[N][N];
int con[N][N];

bool unite(int u, int v){
	if(el[par[u]].size() < el[par[v]].size()){
		swap(u, v);
	}

	int pr = par[v];

	for(int x: el[pr]){
		par[x] = par[u];
	}

	for(int x: el[pr]){
		el[par[u]].push_back(x);

		for(int i = 0; i < x; i++){
			if(!e[i][x]){
				con[par[x]][par[i]]++;
				con[par[i]][par[x]]++;
			}
		}
		for(int i = x + 1; i < n; i++){
			if(!e[x][i]){
				con[par[x]][par[i]]++;
				con[par[i]][par[x]]++;
			}
		}
	}

	return true;
}

void initialize(int _n){
	n = _n;
	for(int i = 0; i < n; i++){
		par[i] = i;
		el[i].push_back(i);
	}

	for(int i = 0; i < n; i++){
		for(int j = i + 1; j < n; j++){
			e[i][j] = false;
			con[i][j] = 1;
			con[j][i] = 1;
		}
	}
}

int hasEdge(int u, int v){
	e[min(u, v)][max(u, v)] = 1;

	if(con[par[u]][par[v]] == 1){
		unite(u, v);
		return 1;
	}

	con[par[u]][par[v]]--;
	con[par[v]][par[u]]--;

	return 0;
}

/*int main(){
	int _n;

	cin >> _n;

	initialize(_n);

	while(true){
		int u, v;

		cin >> u >> v;

		cout << hasEdge(u, v) << endl;
	}

	return 0;
}*/

• Subtask 1: 15 / 15
• Subtask 2: 27 / 27
• Subtask 3: 58 / 58