Submission #545475

#	Time	Username	Problem	Language	Result	Execution time	Memory
545475		DJ035	Connecting Supertrees (IOI20_supertrees)	C++17	0 / 100	1 ms	212 KiB

supertrees

#include "supertrees.h"
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,avx,avx2")
#include <bits/stdc++.h>
#define MEM 222222
#define sanic ios_base::sync_with_stdio(0)
#define x first
#define y second
#define pf push_front
#define pb push_back
#define all(v) v.begin(), v.end()
#define sz size()
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pi;
const ll INF = 2e18;
const ll MOD = 998244353;
ll r[MEM];
int construct(vector<vector<int>> p) {
	int n = p.size();
	vector<vector<int>> ans(n, vector<int>(n, 0));
	for(int i=0; i<n; i++)
        for(int j=0; j<n; j++)
            if(p[i][j]>2) return 0;
    for(int i=0; i<n; i++){
        ll pp=0;
        while(p[i][pp]!=1) pp++;
        if(i==pp){
            r[i] = 1;
            continue;
        }
        if(p[i]!=p[pp]) return 0;
        ans[i][pp] = ans[pp][i] = 1;
    }
    for(int i=0; i<n; i++){
        if(!r[i]) continue;
        ll pp=0;
        while(p[i][pp]==0) pp++;
        for(int j=0; j<n; j++)
            if((!p[pp][j] && p[i][j])||(p[pp][j] && !p[i][j])) return 0;
        if(pp!=i) continue;
        ll pos=i;
        for(int j=0; j<n; j++)
            if(r[j] && p[i][j]) {
                ans[j][pos] = ans[pos][j] = 1;
                pos = j;
            }
        if(ans[pos][i]) return 0;
        else{
            if(pos==i) continue;
            ans[i][pos] = ans[pos][i] = 1;
        }
    }
	build(ans);
	return 1;
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 10
• Subtask 3: 0 / 19
• Subtask 4: 0 / 35
• Subtask 5: 0 / 21
• Subtask 6: 0 / 4