oj.uz

Submission #198548

# Submission time Handle Problem Language Result Execution time Memory
198548 2020-01-26T14:25:56 Z Sakamotoo Dreaming (IOI13_dreaming) C++14
18 / 100
 100 ms 24444 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 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++){
		if(sem[x][i].fi==pen){
			maxi=min(maxi,cari2(sem[x][i].se.fi,baw+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[]) {
	memset(dp,-1,sizeof dp);
    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);
	}
	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:73:16: 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 100 ms 24444 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 100 ms 24444 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 100 ms 24444 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 46 ms 10328 KB Output is correct
2 Correct 47 ms 10340 KB Output is correct
3 Correct 46 ms 10352 KB Output is correct
4 Correct 45 ms 10352 KB Output is correct
5 Correct 55 ms 10348 KB Output is correct
6 Correct 48 ms 11120 KB Output is correct
7 Correct 47 ms 10480 KB Output is correct
8 Correct 43 ms 10224 KB Output is correct
9 Correct 44 ms 10224 KB Output is correct
10 Correct 44 ms 10480 KB Output is correct
11 Correct 9 ms 5752 KB Output is correct
12 Correct 14 ms 7928 KB Output is correct
13 Correct 14 ms 7928 KB Output is correct
14 Correct 15 ms 7924 KB Output is correct
15 Correct 14 ms 7928 KB Output is correct
16 Correct 14 ms 7924 KB Output is correct
17 Correct 14 ms 7792 KB Output is correct
18 Correct 16 ms 7928 KB Output is correct
19 Correct 15 ms 7924 KB Output is correct
20 Correct 9 ms 5752 KB Output is correct
21 Correct 8 ms 5752 KB Output is correct
22 Correct 9 ms 5880 KB Output is correct
23 Correct 18 ms 7928 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 100 ms 24444 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 100 ms 24444 KB Output isn't correct
2 Halted 0 ms 0 KB -