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Submission #49607

# Submission time Handle Problem Language Result Execution time Memory
49607 2018-06-01T01:45:55 Z yogahmad Simurgh (IOI17_simurgh) C++14
30 / 100
 241 ms 20256 KB 
#include <bits/stdc++.h>
#include "simurgh.h"
#define f first
#define s second
#define pb push_back
#define mx 250003
#define ALL(x) x.begin(),x.end()
using namespace std;
int di[mx],M,idx,brp[505][505],level[mx];
bool sudah[mx];
int P[mx];
vector<pair<int,int>>cycle;
vector<int> r;
vector<int>g[mx];


void dfs(int now,int par=0,int lev=1){
	sudah[now]=true;
	level[now]=lev;
	for(auto i:g[now]){
		if(i==par)
			continue;
		if(!sudah[i]){
			P[i]=now;
			di[brp[now][i]]=idx++;
			r.pb(brp[now][i]);
			dfs(i,now,lev+1);
		}
		else if(level[i]<level[now]){
			cycle.pb({now,i});
		}
	}
}

bool cmp(pair<int,int>x,pair<int,int>y){
	return level[x.s]>level[y.s];
}
int par[mx];
int find(int aa){
	if(aa==par[aa])return aa;
	return par[aa]=find(par[aa]);
}
vector<int> find_roads(int N, vector<int> u, vector<int> v) {
	M=u.size();
	for(int i=0;i<M;i++){
		g[u[i]+1].pb(v[i]+1);
		g[v[i]+1].pb(u[i]+1);
		brp[u[i]+1][v[i]+1]=i;
		brp[v[i]+1][u[i]+1]=i;
	}
	for(int i=1;i<=N;i++){
		random_shuffle(ALL(g[i]));
	}
	memset(di,-1,sizeof di);
	dfs(1,0);
	vector<int>satu(N-1);
	int maks=count_common_roads(r);
	for(int i:r){
	//	cout<<u[i]<<" -> "<<v[i]<<"  --  "<<i<<endl;
	}
//	cout<<maks<<endl;
	sort(ALL(cycle),cmp);
	int cnt=0;
	cnt++;
//	debug(maks);
	for(auto i:cycle){
	//	cout<<i.f-1<<" -> "<<i.s-1<<endl;
		int dari=i.f,ke=i.s;
		int besar=0;
		while(dari!=ke){
		//	cout<<"ini "<<" "<<dari-1<<" "<<P[dari]-1<<endl;
			if(di[brp[dari][P[dari]]]!=-1){
				if(cnt==30000)
					break;
				int tmp=brp[dari][P[dari]];
				r[di[tmp]]=brp[i.f][i.s];
				for(int j=0;j<N;j++)
					par[j]=j;
				bool ya=true;
				for(int i:r){
					int x=find(u[i]);
					int y=find(v[i]);
					if(x==y){
						ya=false;
						break;
					}
					par[x]=y;
				}
				int sem=0;
				if(ya && cnt<30000)cnt++,sem=count_common_roads(r);
			//	debug(sem);
				if(sem>besar){
					satu=r;
					besar=sem;
				}
				r[di[tmp]]=brp[dari][P[dari]];
				if(besar>maks){
					break;
				}
			}
			dari=P[dari];
		}
		if(besar>maks){
			maks=besar;
			r=satu;
			memset(di,-1,sizeof di);
			for(int i=0;i<N-1;i++){
				di[r[i]]=i;
			}
		}
		if(cnt==30000)
			break;
	//	for(int i:r)cout<<i<<' ';
	//	cout<<endl;
	//	debug(maks);
	}
	assert(maks==N-1);
//	cout<<maks<<endl;
	return r;
}

Compilation message

simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:58:10: warning: unused variable 'i' [-Wunused-variable]
  for(int i:r){
          ^

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7160 KB correct
2 Correct 10 ms 7400 KB correct
3 Correct 8 ms 7400 KB correct
4 Correct 8 ms 7400 KB correct
5 Correct 8 ms 7400 KB correct
6 Correct 8 ms 7448 KB correct
7 Correct 8 ms 7448 KB correct
8 Correct 8 ms 7448 KB correct
9 Correct 8 ms 7448 KB correct
10 Correct 8 ms 7448 KB correct
11 Correct 7 ms 7508 KB correct
12 Correct 6 ms 7508 KB correct
13 Correct 9 ms 7508 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7160 KB correct
2 Correct 10 ms 7400 KB correct
3 Correct 8 ms 7400 KB correct
4 Correct 8 ms 7400 KB correct
5 Correct 8 ms 7400 KB correct
6 Correct 8 ms 7448 KB correct
7 Correct 8 ms 7448 KB correct
8 Correct 8 ms 7448 KB correct
9 Correct 8 ms 7448 KB correct
10 Correct 8 ms 7448 KB correct
11 Correct 7 ms 7508 KB correct
12 Correct 6 ms 7508 KB correct
13 Correct 9 ms 7508 KB correct
14 Correct 18 ms 7548 KB correct
15 Correct 14 ms 7548 KB correct
16 Correct 12 ms 7548 KB correct
17 Correct 15 ms 7548 KB correct
18 Correct 14 ms 7548 KB correct
19 Correct 15 ms 7552 KB correct
20 Correct 16 ms 7552 KB correct
21 Correct 15 ms 7552 KB correct
22 Correct 13 ms 7552 KB correct
23 Correct 11 ms 7552 KB correct
24 Correct 12 ms 7552 KB correct
25 Correct 8 ms 7552 KB correct
26 Correct 12 ms 7552 KB correct
27 Correct 12 ms 7552 KB correct
28 Correct 9 ms 7552 KB correct
29 Correct 9 ms 7552 KB correct
30 Correct 14 ms 7552 KB correct
31 Correct 13 ms 7552 KB correct
32 Correct 13 ms 7552 KB correct
33 Correct 12 ms 7552 KB correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7160 KB correct
2 Correct 10 ms 7400 KB correct
3 Correct 8 ms 7400 KB correct
4 Correct 8 ms 7400 KB correct
5 Correct 8 ms 7400 KB correct
6 Correct 8 ms 7448 KB correct
7 Correct 8 ms 7448 KB correct
8 Correct 8 ms 7448 KB correct
9 Correct 8 ms 7448 KB correct
10 Correct 8 ms 7448 KB correct
11 Correct 7 ms 7508 KB correct
12 Correct 6 ms 7508 KB correct
13 Correct 9 ms 7508 KB correct
14 Correct 18 ms 7548 KB correct
15 Correct 14 ms 7548 KB correct
16 Correct 12 ms 7548 KB correct
17 Correct 15 ms 7548 KB correct
18 Correct 14 ms 7548 KB correct
19 Correct 15 ms 7552 KB correct
20 Correct 16 ms 7552 KB correct
21 Correct 15 ms 7552 KB correct
22 Correct 13 ms 7552 KB correct
23 Correct 11 ms 7552 KB correct
24 Correct 12 ms 7552 KB correct
25 Correct 8 ms 7552 KB correct
26 Correct 12 ms 7552 KB correct
27 Correct 12 ms 7552 KB correct
28 Correct 9 ms 7552 KB correct
29 Correct 9 ms 7552 KB correct
30 Correct 14 ms 7552 KB correct
31 Correct 13 ms 7552 KB correct
32 Correct 13 ms 7552 KB correct
33 Correct 12 ms 7552 KB correct
34 Runtime error 241 ms 17656 KB Execution killed with signal 11 (could be triggered by violating memory limits)
35 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 17656 KB correct
2 Correct 11 ms 17656 KB correct
3 Incorrect 151 ms 20256 KB WA in grader: NO
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7160 KB correct
2 Correct 10 ms 7400 KB correct
3 Correct 8 ms 7400 KB correct
4 Correct 8 ms 7400 KB correct
5 Correct 8 ms 7400 KB correct
6 Correct 8 ms 7448 KB correct
7 Correct 8 ms 7448 KB correct
8 Correct 8 ms 7448 KB correct
9 Correct 8 ms 7448 KB correct
10 Correct 8 ms 7448 KB correct
11 Correct 7 ms 7508 KB correct
12 Correct 6 ms 7508 KB correct
13 Correct 9 ms 7508 KB correct
14 Correct 18 ms 7548 KB correct
15 Correct 14 ms 7548 KB correct
16 Correct 12 ms 7548 KB correct
17 Correct 15 ms 7548 KB correct
18 Correct 14 ms 7548 KB correct
19 Correct 15 ms 7552 KB correct
20 Correct 16 ms 7552 KB correct
21 Correct 15 ms 7552 KB correct
22 Correct 13 ms 7552 KB correct
23 Correct 11 ms 7552 KB correct
24 Correct 12 ms 7552 KB correct
25 Correct 8 ms 7552 KB correct
26 Correct 12 ms 7552 KB correct
27 Correct 12 ms 7552 KB correct
28 Correct 9 ms 7552 KB correct
29 Correct 9 ms 7552 KB correct
30 Correct 14 ms 7552 KB correct
31 Correct 13 ms 7552 KB correct
32 Correct 13 ms 7552 KB correct
33 Correct 12 ms 7552 KB correct
34 Runtime error 241 ms 17656 KB Execution killed with signal 11 (could be triggered by violating memory limits)
35 Halted 0 ms 0 KB -