oj.uz

Submission #347993

# Submission time Handle Problem Language Result Execution time Memory
347993 2021-01-14T02:43:18 Z arnold518 Swapping Cities (APIO20_swap) C++14
0 / 100
 2000 ms 7568 KB 
#include "swap.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 1e5;
const int MAXM = 2e5;

int N, M;

struct Edge
{
	int u, v, w;
};
Edge E[MAXM+10];

int deg[MAXN+10], val[MAXN+10], cnt[MAXN+10], sz[MAXN+10];

struct UF
{
	int par[MAXN+10];

	void init()
	{
		for(int i=1; i<=N; i++)
		{
			par[i]=i;
		}		
	}

	int Find(int x)
	{
		if(x==par[x]) return x;
		return par[x]=Find(par[x]);
	}
}uf;

void init(int _N, int _M, vector<int> _U, vector<int> _V, vector<int> _W)
{
	N=_N; M=_M;
	for(int i=0; i<M; i++)
	{
		int u=_U[i], v=_V[i], w=_W[i];
		E[i]={u, v, w};
	}
	sort(E+1, E+M+1, [&](const Edge &p, const Edge &q)
	{
		return p.w<q.w;
	});

}
int getMinimumFuelCapacity(int X, int Y)
{
	uf.init();
	for(int i=1; i<=N; i++)
	{
		deg[i]=0;
		val[i]=0;
		cnt[i]=0;
		sz[i]=1;
	}
	for(int i=1; i<=M; i++)
	{
		int u=E[i].u, v=E[i].v, w=E[i].w;
		deg[u]++; deg[v]++;

		int uu=uf.Find(u), vv=uf.Find(v);

		if(uu==vv)
		{
			val[uu]=max(val[uu], deg[u]);
			val[uu]=max(val[uu], deg[v]);
			cnt[uu]++;
		}
		else
		{
			uf.par[vv]=uu;
			val[uu]=max(val[uu], val[vv]);
			cnt[uu]+=cnt[vv];
			sz[uu]+=sz[vv];
			val[uu]=max(val[uu], deg[u]);
			val[uu]=max(val[uu], deg[v]);
			cnt[uu]++;
		}

		int XX=uf.Find(X), YY=uf.Find(Y);
		if(XX!=YY) continue;
		if(val[XX]>=3) return w;
		if(val[XX]==2 && cnt[XX]==sz[XX]) return w;
	}
	return -1;
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Incorrect 1 ms 364 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Execution timed out 2062 ms 7568 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Incorrect 1 ms 364 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Incorrect 1 ms 364 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Incorrect 1 ms 364 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Incorrect 1 ms 364 KB Output isn't correct
6 Halted 0 ms 0 KB -