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Submission #954346

# Submission time Handle Problem Language Result Execution time Memory
954346 2024-03-27T16:15:43 Z amirhoseinfar1385 Swapping Cities (APIO20_swap) C++17
0 / 100
 2000 ms 22228 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]);
			}
			for(auto x:allv[rootv]){
				allv[rootu].push_back(x);
			}
			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(alle[i].u,alle[i].w);
			}
		}else{
			ds.tagh(alle[i].u,alle[i].w);
		}
	}
}
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=inf;
  dfsres(X,Y);
  long long ret=max(mx,min(mainres[X],mainres[Y]));
  if(ret>=inf){
  	return -1;
  }
  return ret;
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9816 KB Output is correct
2 Correct 5 ms 9820 KB Output is correct
3 Correct 5 ms 9820 KB Output is correct
4 Correct 5 ms 9952 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 6 ms 9820 KB Output is correct
7 Correct 5 ms 9820 KB Output is correct
8 Correct 5 ms 9820 KB Output is correct
9 Correct 51 ms 17620 KB Output is correct
10 Correct 82 ms 21736 KB Output is correct
11 Correct 89 ms 21448 KB Output is correct
12 Correct 90 ms 22228 KB Output is correct
13 Correct 85 ms 21776 KB Output is correct
14 Execution timed out 2064 ms 20768 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 9816 KB Output is correct
2 Correct 5 ms 9820 KB Output is correct
3 Execution timed out 2050 ms 18412 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 9816 KB Output is correct
2 Correct 5 ms 9820 KB Output is correct
3 Correct 5 ms 9820 KB Output is correct
4 Correct 5 ms 9952 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 6 ms 9820 KB Output is correct
7 Correct 5 ms 9820 KB Output is correct
8 Correct 5 ms 9820 KB Output is correct
9 Incorrect 5 ms 9816 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 9816 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9816 KB Output is correct
2 Correct 5 ms 9820 KB Output is correct
3 Correct 5 ms 9820 KB Output is correct
4 Correct 5 ms 9952 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 6 ms 9820 KB Output is correct
7 Correct 5 ms 9820 KB Output is correct
8 Correct 5 ms 9820 KB Output is correct
9 Correct 51 ms 17620 KB Output is correct
10 Correct 82 ms 21736 KB Output is correct
11 Correct 89 ms 21448 KB Output is correct
12 Correct 90 ms 22228 KB Output is correct
13 Correct 85 ms 21776 KB Output is correct
14 Execution timed out 2064 ms 20768 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 9816 KB Output isn't correct
2 Halted 0 ms 0 KB -