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Submission #199447

# Submission time Handle Problem Language Result Execution time Memory
199447 2020-02-01T12:48:26 Z TadijaSebez Senior Postmen (BOI14_postmen) C++11
55 / 100
 500 ms 64512 KB 
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
const int N=500050;
int was[N],wse[N];
vector<pair<int,int>> E[N];
vector<int> tmp;
vector<vector<int>> ans;
int DFS(int u){
	was[u]=1;
	while(E[u].size()){
		auto e=E[u].back();
		if(wse[e.second])E[u].pop_back();
		else{
			int v=e.first;
			wse[e.second]=1;
			if(was[v]){
				tmp.clear();
				tmp.pb(u);
				was[u]=0;
				return v;
			}else{
				int t=DFS(v);
				if(t!=u){
					tmp.pb(u);
					was[u]=0;
					return t;
				}
				tmp.pb(u);
				ans.pb(tmp);
			}
		}
	}
	return -1;
}
int main(){
	int n,m;
	scanf("%i %i",&n,&m);
	for(int i=1,u,v;i<=m;i++)scanf("%i %i",&u,&v),E[u].pb({v,i}),E[v].pb({u,i});
	for(int i=1;i<=n;i++)DFS(i);
	for(auto cyc:ans)for(int i=0;i<cyc.size();i++)printf("%i%c",cyc[i],i+1==cyc.size()?'\n':' ');
	return 0;
}

Compilation message

postmen.cpp: In function 'int main()':
postmen.cpp:41:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(auto cyc:ans)for(int i=0;i<cyc.size();i++)printf("%i%c",cyc[i],i+1==cyc.size()?'\n':' ');
                               ~^~~~~~~~~~~
postmen.cpp:41:72: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(auto cyc:ans)for(int i=0;i<cyc.size();i++)printf("%i%c",cyc[i],i+1==cyc.size()?'\n':' ');
                                                                     ~~~^~~~~~~~~~~~
postmen.cpp:38:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i %i",&n,&m);
  ~~~~~^~~~~~~~~~~~~~~
postmen.cpp:39:62: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1,u,v;i<=m;i++)scanf("%i %i",&u,&v),E[u].pb({v,i}),E[v].pb({u,i});
                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

Subtask #1
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 12032 KB Output is correct
2 Correct 12 ms 12032 KB Output is correct
3 Correct 12 ms 12160 KB Output is correct
4 Correct 14 ms 12288 KB Output is correct
5 Correct 12 ms 12160 KB Output is correct
6 Correct 16 ms 12288 KB Output is correct
7 Correct 21 ms 12672 KB Output is correct
8 Correct 13 ms 12300 KB Output is correct
9 Correct 66 ms 15224 KB Output is correct
10 Correct 14 ms 12264 KB Output is correct
11 Correct 13 ms 12208 KB Output is correct
12 Correct 64 ms 15580 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12160 KB Output is correct
2 Correct 13 ms 12032 KB Output is correct
3 Correct 13 ms 12136 KB Output is correct
4 Correct 15 ms 12288 KB Output is correct
5 Correct 12 ms 12160 KB Output is correct
6 Correct 14 ms 12288 KB Output is correct
7 Correct 18 ms 12672 KB Output is correct
8 Correct 13 ms 12288 KB Output is correct
9 Correct 51 ms 15240 KB Output is correct
10 Correct 14 ms 12288 KB Output is correct
11 Correct 13 ms 12288 KB Output is correct
12 Correct 60 ms 15656 KB Output is correct
13 Correct 93 ms 22564 KB Output is correct
14 Correct 92 ms 17536 KB Output is correct
15 Correct 81 ms 17900 KB Output is correct
16 Correct 101 ms 22636 KB Output is correct
17 Correct 103 ms 18096 KB Output is correct
18 Correct 92 ms 18968 KB Output is correct

Subtask #3
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12032 KB Output is correct
2 Correct 14 ms 12136 KB Output is correct
3 Correct 12 ms 12136 KB Output is correct
4 Correct 14 ms 12288 KB Output is correct
5 Correct 13 ms 12156 KB Output is correct
6 Correct 13 ms 12288 KB Output is correct
7 Correct 19 ms 12672 KB Output is correct
8 Correct 13 ms 12288 KB Output is correct
9 Correct 63 ms 15216 KB Output is correct
10 Correct 13 ms 12288 KB Output is correct
11 Correct 15 ms 12288 KB Output is correct
12 Correct 60 ms 15584 KB Output is correct
13 Correct 93 ms 22516 KB Output is correct
14 Correct 107 ms 17524 KB Output is correct
15 Correct 80 ms 17900 KB Output is correct
16 Correct 97 ms 22628 KB Output is correct
17 Correct 109 ms 18072 KB Output is correct
18 Correct 115 ms 19044 KB Output is correct
19 Execution timed out 572 ms 64512 KB Time limit exceeded
20 Halted 0 ms 0 KB -