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Submission #558193

# Submission time Handle Problem Language Result Execution time Memory
558193 2022-05-07T03:17:53 Z Shelter Senior Postmen (BOI14_postmen) C++17
100 / 100
 446 ms 92232 KB 
#include<bits/stdc++.h> 
using namespace std; 
#define ii pair<int, int> 
#define vi vector<int> 
#define F first
#define S second
#define endl '\n'
#define int long long
const int maxn = 5e5 + 5; 
int n, m, pt[maxn];
vector<ii> g[maxn]; 
bool used[maxn], vs[maxn]; 
vector<int> ans; 
void hier(int u) { 
	while(pt[u] < g[u].size()) {
		int id = g[u][pt[u]].S, v = g[u][pt[u]].F; 
		if(!used[id]) { 
			used[id] = 1; 
			hier(v); 
		}
		++pt[u]; 
	}
	ans.emplace_back(u); 
}
vector<vi> decompose() { 
	stack<int> cur; 
	vector<vi> re; 
	for(int u: ans) { 
		if(!vs[u]) { 
			cur.push(u); 
			vs[u] = 1; 
		}
		else { 
			vi cyc; 
			while(vs[u]) { 
				cyc.emplace_back(cur.top()); 
				vs[cur.top()] = 0; 
				cur.pop(); 
			}
			re.emplace_back(cyc); 
			cur.push(u); 
			vs[u] = 1; 
		}
	}
	return re; 		
}
signed main() { 
	ios_base::sync_with_stdio(0); 
	cin.tie(0); 
	cout.tie(0); 
	cin >> n >> m; 
	for(int i = 1; i <= m; i++) { 
		int u, v; cin >> u >> v; 
		g[u].emplace_back(v, i); 
		g[v].emplace_back(u, i); 
	}
	hier(1);
	auto t = decompose(); 
	for(auto cyc: t) { 
		for(int u: cyc) { 
			cout << u << ' '; 
		}
		cout << endl; 
	}
}

Compilation message

postmen.cpp: In function 'void hier(long long int)':
postmen.cpp:15:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  while(pt[u] < g[u].size()) {
      |        ~~~~~~^~~~~~~~~~~~~

Subtask #1
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 7 ms 12052 KB Output is correct
3 Correct 7 ms 12080 KB Output is correct
4 Correct 8 ms 12500 KB Output is correct
5 Correct 7 ms 12176 KB Output is correct
6 Correct 7 ms 12612 KB Output is correct
7 Correct 12 ms 14152 KB Output is correct
8 Correct 8 ms 12424 KB Output is correct
9 Correct 39 ms 23228 KB Output is correct
10 Correct 8 ms 12380 KB Output is correct
11 Correct 7 ms 12352 KB Output is correct
12 Correct 40 ms 23960 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 7 ms 11988 KB Output is correct
3 Correct 7 ms 11988 KB Output is correct
4 Correct 8 ms 12488 KB Output is correct
5 Correct 7 ms 12244 KB Output is correct
6 Correct 7 ms 12628 KB Output is correct
7 Correct 12 ms 14164 KB Output is correct
8 Correct 7 ms 12372 KB Output is correct
9 Correct 40 ms 23260 KB Output is correct
10 Correct 8 ms 12372 KB Output is correct
11 Correct 8 ms 12440 KB Output is correct
12 Correct 41 ms 24000 KB Output is correct
13 Correct 61 ms 27412 KB Output is correct
14 Correct 65 ms 24276 KB Output is correct
15 Correct 58 ms 26684 KB Output is correct
16 Correct 71 ms 27460 KB Output is correct
17 Correct 65 ms 22264 KB Output is correct
18 Correct 61 ms 25360 KB Output is correct

Subtask #3
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 12084 KB Output is correct
2 Correct 6 ms 12072 KB Output is correct
3 Correct 8 ms 11992 KB Output is correct
4 Correct 8 ms 12520 KB Output is correct
5 Correct 7 ms 12220 KB Output is correct
6 Correct 8 ms 12628 KB Output is correct
7 Correct 12 ms 14036 KB Output is correct
8 Correct 7 ms 12372 KB Output is correct
9 Correct 36 ms 23320 KB Output is correct
10 Correct 8 ms 12372 KB Output is correct
11 Correct 8 ms 12352 KB Output is correct
12 Correct 44 ms 24052 KB Output is correct
13 Correct 63 ms 27448 KB Output is correct
14 Correct 68 ms 24260 KB Output is correct
15 Correct 58 ms 26724 KB Output is correct
16 Correct 60 ms 27460 KB Output is correct
17 Correct 64 ms 22336 KB Output is correct
18 Correct 63 ms 25364 KB Output is correct
19 Correct 391 ms 89128 KB Output is correct
20 Correct 400 ms 73824 KB Output is correct
21 Correct 380 ms 84260 KB Output is correct
22 Correct 397 ms 92232 KB Output is correct
23 Correct 161 ms 66176 KB Output is correct
24 Correct 446 ms 63252 KB Output is correct
25 Correct 430 ms 79592 KB Output is correct