oj.uz

Submission #198557

# Submission time Handle Problem Language Result Execution time Memory
198557 2020-01-26T15:32:56 Z Sakamotoo Dreaming (IOI13_dreaming) C++14
18 / 100
 99 ms 24312 KB 
#include "dreaming.h"
#include <bits/stdc++.h>
using namespace std;

#define mp make_pair
#define fi first
#define se second

const int sim=100010;

int p[sim];
bool udah[sim];
vector<pair<int,int> > adj[sim];
long long dp[sim];
vector<pair<long long,pair<int,int> > >sem[sim];

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

long long cari(int x, int seb){
	for(int i=0; i<adj[x].size(); i++){
		int ind=adj[x][i].fi;
		if(ind!=seb){
			sem[x].push_back(mp(cari(ind,x)+adj[x][i].se,mp(ind,adj[x][i].se)));
		}
	}
	sort(sem[x].begin(),sem[x].end());
	reverse(sem[x].begin(),sem[x].end());
	if(sem[x].size()==0) return dp[x]=0;
	else return dp[x]=sem[x][0].fi;
}

long long cari2(int x,long long baw){
	if(sem[x].size()==0) return baw;
//	if(sem[x].size()>1)baw=max(baw,sem[x][1].fi);
//	long long pen=sem[x][0].fi;
	long long maxi=1e18;
	maxi=min(maxi,max(baw,dp[x]));
//	cout<<"dp "<<x<<' '<<dp[x]<<endl;
	for(int i=0; i<sem[x].size(); i++){
		long long seu=baw;
		if(i==0){
			seu=max(seu,sem[x][1].fi);
		}else {
			seu=max(seu,sem[x][0].fi);
		}
		maxi=min(maxi,cari2(sem[x][i].se.fi,seu+sem[x][i].se.se));
	}
//	cout<<x<<' '<<maxi<<endl;
	return maxi;
}

int travelTime(int n, int m, int l, int a[], int b[], int t[]) {
    for(int i=0; i<n; i++){
    	p[i]=i;
	}
	for(int i=0; i<m; i++){
		adj[a[i]].push_back(mp(b[i],t[i]));
		adj[b[i]].push_back(mp(a[i],t[i]));
		
		int x=par(a[i]),y=par(b[i]);
		p[x]=y;
	}
	vector<int> v;
	
	for(int i=0; i<n; i++){
		int x=par(i);
		if(!udah[x]) v.push_back(x);
		udah[x]=1;	
	}
	
	vector<long long> jaw;
	//cout<<v.size()<<endl;
	for(int i=0; i<v.size(); i++){
	//	cout<<v[i]<<endl;
		cari(v[i],-1);
		long long baw=0;
		if(sem[v[i]].size()>1){
			baw=sem[v[i]][1].fi;
		}
		long long wk=cari2(v[i],baw);
	//	cout<<wk<<endl<<endl;
		jaw.push_back(wk);
	}
	sort(jaw.begin(),jaw.end());
	reverse(jaw.begin(),jaw.end());
	long long has=jaw[0];
	if(jaw.size()>=2){
		has=max(has,jaw[1]+jaw[0]+l);
		for(int i=1; i<=1e9; i++){
		}
	}
	if(jaw.size()>=3){
		has=max(has,jaw[1]+jaw[2]+l+l);
	}
	return has;
}

Compilation message

dreaming.cpp: In function 'long long int cari(int, int)':
dreaming.cpp:23:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<adj[x].size(); i++){
               ~^~~~~~~~~~~~~~
dreaming.cpp: In function 'long long int cari2(int, long long int)':
dreaming.cpp:42:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<sem[x].size(); i++){
               ~^~~~~~~~~~~~~~
dreaming.cpp: In function 'int travelTime(int, int, int, int*, int*, int*)':
dreaming.cpp:76:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<v.size(); i++){
               ~^~~~~~~~~

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 99 ms 24312 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 99 ms 24312 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 99 ms 24312 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 10224 KB Output is correct
2 Correct 43 ms 10224 KB Output is correct
3 Correct 47 ms 10220 KB Output is correct
4 Correct 43 ms 10320 KB Output is correct
5 Correct 44 ms 10224 KB Output is correct
6 Correct 51 ms 11124 KB Output is correct
7 Correct 49 ms 10476 KB Output is correct
8 Correct 43 ms 10224 KB Output is correct
9 Correct 44 ms 10096 KB Output is correct
10 Correct 49 ms 10480 KB Output is correct
11 Correct 8 ms 4984 KB Output is correct
12 Correct 14 ms 7800 KB Output is correct
13 Correct 16 ms 7924 KB Output is correct
14 Correct 13 ms 7792 KB Output is correct
15 Correct 15 ms 7796 KB Output is correct
16 Correct 14 ms 7792 KB Output is correct
17 Correct 17 ms 7656 KB Output is correct
18 Correct 16 ms 7928 KB Output is correct
19 Correct 15 ms 7796 KB Output is correct
20 Correct 8 ms 4984 KB Output is correct
21 Correct 8 ms 4984 KB Output is correct
22 Correct 9 ms 5112 KB Output is correct
23 Correct 14 ms 7924 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 99 ms 24312 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 99 ms 24312 KB Output isn't correct
2 Halted 0 ms 0 KB -