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Submission #954336

# Submission time Handle Problem Language Result Execution time Memory
954336 2024-03-27T16:08:24 Z amirhoseinfar1385 Swapping Cities (APIO20_swap) C++17
0 / 100
 2000 ms 22244 KB 
#include "swap.h"
#include<bits/stdc++.h>
using namespace std;
struct yal{
	int u,v,w,vas;
	bool operator <(yal b){
		return w<b.w;
	}
	int getad(int fu){
		return (fu^u^v);
	}
};
const int maxn=100000+10,lg=17;
int n,m,wlca[lg][maxn],inf=1e9+5,mainres[maxn];
vector<yal>alle;
vector<int>adjt[maxn];

struct dsu{
	int par[maxn];
	vector<int>allv[maxn];
	dsu(){
		for(int i=0;i<maxn;i++){
			par[i]=i;
			allv[i].push_back(i);
		}
	};
	int root(int u){
		if(u==par[u]){
			return u;
		}
		return par[u]=root(par[u]);
	}
	int con(int u,int v){
		int rootu=root(u),rootv=root(v);
		if(rootu!=rootv){
			par[rootu]=rootv;
			if((int)allv[rootu].size()<(int)allv[rootv].size()){
				swap(allv[rootu],allv[rootv]);
			}
			return 1;
		}else{
			return 0;
		}
	}
	void tagh(int u,int w){
		u=root(u);
		for(auto x:allv[u]){
			mainres[x]=min(mainres[x],w);
		}
		allv[u].clear();
	}
}ds;
int av=inf;

void init(int N, int M,std::vector<int> U, std::vector<int> V, std::vector<int> W) {
	n=N;
	m=M;
	alle.resize(m);
	for(int i=0;i<maxn;i++){
		mainres[i]=inf;
	}
	for(int i=0;i<m;i++){
		alle[i].u=U[i];
		alle[i].v=V[i];
		alle[i].w=W[i];
	}
	sort(alle.begin(),alle.end());
	for(int i=0;i<m;i++){
		if(ds.con(alle[i].u,alle[i].v)){
			alle[i].vas=1;
			adjt[alle[i].u].push_back(i);
			adjt[alle[i].v].push_back(i);
			if((int)adjt[alle[i].u].size()>2||(int)adjt[alle[i].v].size()>2){
				ds.tagh(i,alle[i].w);
			}
		}else{
			av=min(alle[i].w,av);
		}
	}
}
int mx;
void dfsres(int u,int had,int par=-1,int len=0){
	if(had==u){
		mx=len;
		return ;
	}
	for(auto x:adjt[u]){
		int v=alle[x].getad(u);
		if(v==par){
			continue;
		}
		dfsres(v,had,u,max(len,alle[x].w));
	}
}

int getMinimumFuelCapacity(int X, int Y) {
  mx=min(mainres[X],mainres[Y]);
  dfsres(X,Y);
  long long ret=max(mx,av);
  if(ret>=inf){
  	return -1;
  }
  return ret;
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9820 KB Output is correct
2 Correct 5 ms 9908 KB Output is correct
3 Correct 5 ms 9820 KB Output is correct
4 Correct 6 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 5 ms 9816 KB Output is correct
7 Correct 6 ms 9816 KB Output is correct
8 Correct 6 ms 10032 KB Output is correct
9 Correct 45 ms 17848 KB Output is correct
10 Correct 65 ms 21872 KB Output is correct
11 Correct 80 ms 21496 KB Output is correct
12 Correct 75 ms 22244 KB Output is correct
13 Correct 60 ms 21684 KB Output is correct
14 Execution timed out 2033 ms 20652 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9820 KB Output is correct
2 Correct 5 ms 9908 KB Output is correct
3 Execution timed out 2051 ms 18376 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9820 KB Output is correct
2 Correct 5 ms 9908 KB Output is correct
3 Correct 5 ms 9820 KB Output is correct
4 Correct 6 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 5 ms 9816 KB Output is correct
7 Correct 6 ms 9816 KB Output is correct
8 Correct 6 ms 10032 KB Output is correct
9 Correct 5 ms 9820 KB Output is correct
10 Incorrect 5 ms 9820 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9820 KB Output is correct
2 Correct 5 ms 9820 KB Output is correct
3 Correct 5 ms 9908 KB Output is correct
4 Correct 5 ms 9820 KB Output is correct
5 Correct 6 ms 9820 KB Output is correct
6 Correct 5 ms 9820 KB Output is correct
7 Correct 5 ms 9816 KB Output is correct
8 Correct 6 ms 9816 KB Output is correct
9 Correct 6 ms 10032 KB Output is correct
10 Correct 45 ms 17848 KB Output is correct
11 Correct 65 ms 21872 KB Output is correct
12 Correct 80 ms 21496 KB Output is correct
13 Correct 75 ms 22244 KB Output is correct
14 Correct 60 ms 21684 KB Output is correct
15 Incorrect 5 ms 9820 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9820 KB Output is correct
2 Correct 5 ms 9908 KB Output is correct
3 Correct 5 ms 9820 KB Output is correct
4 Correct 6 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 5 ms 9816 KB Output is correct
7 Correct 6 ms 9816 KB Output is correct
8 Correct 6 ms 10032 KB Output is correct
9 Correct 45 ms 17848 KB Output is correct
10 Correct 65 ms 21872 KB Output is correct
11 Correct 80 ms 21496 KB Output is correct
12 Correct 75 ms 22244 KB Output is correct
13 Correct 60 ms 21684 KB Output is correct
14 Execution timed out 2033 ms 20652 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9820 KB Output is correct
2 Correct 5 ms 9820 KB Output is correct
3 Correct 5 ms 9908 KB Output is correct
4 Correct 5 ms 9820 KB Output is correct
5 Correct 6 ms 9820 KB Output is correct
6 Correct 5 ms 9820 KB Output is correct
7 Correct 5 ms 9816 KB Output is correct
8 Correct 6 ms 9816 KB Output is correct
9 Correct 6 ms 10032 KB Output is correct
10 Correct 45 ms 17848 KB Output is correct
11 Correct 65 ms 21872 KB Output is correct
12 Correct 80 ms 21496 KB Output is correct
13 Correct 75 ms 22244 KB Output is correct
14 Correct 60 ms 21684 KB Output is correct
15 Execution timed out 2033 ms 20652 KB Time limit exceeded
16 Halted 0 ms 0 KB -