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Submission #485089

# Submission time Handle Problem Language Result Execution time Memory
485089 2021-11-06T07:15:30 Z Trunkty Izlet (COI19_izlet) C++14
18 / 100
 2000 ms 368416 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
mt19937 rng32(chrono::steady_clock::now().time_since_epoch().count());

int n;
vector<vector<int>> ans,ord;
int arr[3005][3005];
int par[3005];
vector<int> roads[3005];
int col[3005];
vector<int> checked;

int findpar(int x){
	if(x!=par[x]){
		int p = findpar(par[x]);
		par[x] = p;
	}
	return par[x];
}

void domerge(int a, int b){
	if(findpar(a)!=findpar(b)){
		ans.push_back({a,b});
		par[findpar(a)] = findpar(b);
		roads[a].push_back(b);
		roads[b].push_back(a);
	}
}

void dfs(int x, int par){
	int iscol = x;
	for(int i:checked){
		if(arr[x][i]==arr[par][i]){
			iscol = col[i];
		}
	}
	col[x] = iscol;
	checked.push_back(x);
	for(int i:roads[x]){
		if(i!=par){
			dfs(i,x);
		}
	}
}

int main(){
	ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int sub;
    cin >> sub;
    cin >> n;
    for(int i=1;i<=n;i++){
    	par[i] = i;
    	for(int j=1;j<=n;j++){
    		cin >> arr[i][j];
    		if(i<j){
    			ord.push_back({arr[i][j],i,j});
			}
		}
	}
	sort(ord.begin(),ord.end());
	for(vector<int> i:ord){
		domerge(i[1],i[2]);
	}
	dfs(1,0);
	for(int i=1;i<=n;i++){
		cout << col[i] << " ";
	}
	cout << "\n";
	for(vector<int> i:ans){
		cout << i[0] << " " << i[1] << "\n";
	}
	return 0;
}

Subtask #1
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1281 ms 368064 KB Output is correct
3 Correct 1289 ms 368076 KB Output is correct
4 Correct 1641 ms 368232 KB Output is correct
5 Correct 1692 ms 368416 KB Output is correct

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2101 ms 367948 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1281 ms 368064 KB Output is correct
3 Correct 1289 ms 368076 KB Output is correct
4 Correct 1641 ms 368232 KB Output is correct
5 Correct 1692 ms 368416 KB Output is correct
6 Execution timed out 2101 ms 367948 KB Time limit exceeded
7 Halted 0 ms 0 KB -