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Submission #198451

# Submission time Handle Problem Language Result Execution time Memory
198451 2020-01-26T05:43:28 Z oolimry Monthly railway pass (LMIO18_menesinis_bilietas) C++14
100 / 100
 598 ms 68972 KB 
#include <bits/stdc++.h>

using namespace std;
static int p[500005];
int numSets;
int findSet(int u){
	if(p[u] == u) return u;
	else{
		p[u] = findSet(p[u]);
		return p[u];
	}
}

void unionSet(int u, int v){
	u = findSet(u);
	v = findSet(v);
	if(u == v) return;
	p[u] = v;
	numSets--;
}

typedef pair<int,int> ii; 
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	int n, m; cin >> n >> m;
	numSets = n;
	unordered_set<int> edges[n];
	for(int i = 0;i < n;i++) p[i] = i;
	vector<ii> bus;
	for(int i = 0;i < m;i++){
		int u, v; char c;
		cin >> u >> v >> c;
		u--; v--;
		if(c == 'T'){
			unionSet(u,v);
		}
		else{
			bus.push_back(ii(u,v));
		}
	}
	
	for(ii e : bus){
		int u = findSet(e.first);
		int v = findSet(e.second);
		if(u == v) continue;
		edges[u].insert(v);
		edges[v].insert(u);
	}
	
	int ans = 0;
	for(int i = 0;i < n;i++){
		if(numSets - 1 == edges[findSet(i)].size()) ans++;
	}
	
	cout << ans << "\n";
}

Compilation message

menesinis_bilietas.cpp: In function 'int main()':
menesinis_bilietas.cpp:53:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(numSets - 1 == edges[findSet(i)].size()) ans++;
      ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 197 ms 17916 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 27 ms 27896 KB Output is correct
5 Correct 5 ms 1016 KB Output is correct
6 Correct 45 ms 760 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 27896 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 9 ms 1144 KB Output is correct
5 Correct 5 ms 1016 KB Output is correct
6 Correct 598 ms 35812 KB Output is correct
7 Correct 521 ms 68972 KB Output is correct
8 Correct 16 ms 2808 KB Output is correct
9 Correct 24 ms 4216 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 6 ms 504 KB Output is correct
5 Correct 7 ms 504 KB Output is correct
6 Correct 7 ms 632 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 9 ms 760 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 6 ms 504 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 6 ms 504 KB Output is correct
14 Correct 6 ms 376 KB Output is correct
15 Correct 7 ms 504 KB Output is correct
16 Correct 6 ms 376 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 6 ms 376 KB Output is correct
19 Correct 6 ms 376 KB Output is correct
20 Correct 9 ms 1144 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 6 ms 504 KB Output is correct
5 Correct 7 ms 504 KB Output is correct
6 Correct 7 ms 632 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 9 ms 760 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 6 ms 504 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 6 ms 504 KB Output is correct
14 Correct 6 ms 376 KB Output is correct
15 Correct 7 ms 504 KB Output is correct
16 Correct 14 ms 1144 KB Output is correct
17 Correct 108 ms 8808 KB Output is correct
18 Correct 44 ms 4080 KB Output is correct
19 Correct 199 ms 14312 KB Output is correct
20 Correct 34 ms 2924 KB Output is correct
21 Correct 161 ms 12904 KB Output is correct
22 Correct 6 ms 376 KB Output is correct
23 Correct 5 ms 376 KB Output is correct
24 Correct 6 ms 376 KB Output is correct
25 Correct 6 ms 376 KB Output is correct
26 Correct 9 ms 1144 KB Output is correct
27 Correct 5 ms 1016 KB Output is correct
28 Correct 16 ms 2808 KB Output is correct
29 Correct 24 ms 4216 KB Output is correct
30 Correct 45 ms 760 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 6 ms 504 KB Output is correct
5 Correct 7 ms 504 KB Output is correct
6 Correct 7 ms 632 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 9 ms 760 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 6 ms 504 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 6 ms 504 KB Output is correct
14 Correct 6 ms 376 KB Output is correct
15 Correct 7 ms 504 KB Output is correct
16 Correct 14 ms 1144 KB Output is correct
17 Correct 108 ms 8808 KB Output is correct
18 Correct 44 ms 4080 KB Output is correct
19 Correct 199 ms 14312 KB Output is correct
20 Correct 34 ms 2924 KB Output is correct
21 Correct 161 ms 12904 KB Output is correct
22 Correct 197 ms 17916 KB Output is correct
23 Correct 6 ms 376 KB Output is correct
24 Correct 5 ms 376 KB Output is correct
25 Correct 27 ms 27896 KB Output is correct
26 Correct 6 ms 376 KB Output is correct
27 Correct 6 ms 376 KB Output is correct
28 Correct 9 ms 1144 KB Output is correct
29 Correct 5 ms 1016 KB Output is correct
30 Correct 598 ms 35812 KB Output is correct
31 Correct 521 ms 68972 KB Output is correct
32 Correct 33 ms 4724 KB Output is correct
33 Correct 214 ms 18916 KB Output is correct
34 Correct 80 ms 15352 KB Output is correct
35 Correct 16 ms 2808 KB Output is correct
36 Correct 24 ms 4216 KB Output is correct
37 Correct 45 ms 760 KB Output is correct