oj.uz

Submission #132476

# Submission time Handle Problem Language Result Execution time Memory
132476 2019-07-19T01:48:03 Z sean617 None (KOI17_cat) C++
12 / 100
 1065 ms 22468 KB 
#include <iostream>
#include <cstdio>
#include <vector>
#define N 300005
using namespace std;

typedef long long ll;
ll n, m, k, s, v[N];
bool z;
vector<ll> a[N];
void f(ll p, ll q) {
	ll i, num;
	if (v[p] == k) {z = 1; return;}
	v[p] = k;
	for (i =0; i < a[p].size(); i++) {
		num = a[p][i];
		if (num == q || num == k) continue;
		f(num, p);
	}
}
int main()
{
	ll i, j, t1, t2;
	cin >> n >> m;
	while (m--) {
		scanf ("%lld %lld", &t1, &t2);
		a[t1].push_back(t2);
		a[t2].push_back(t1);
	}
	if (n <= 5000 && m <= 5000) {
		for (k = 1; k <= n; k++) {
			for (j = 1; j <= n; j++) {
				if (v[j] == k || j == k) continue;
				z = 0;
				f(j, 0);
				if (z) break;
			}
			if (j > n) s += k;
		}
		cout << s;
		return 0;
	}
    cout << 0;
    return 0;
}

Compilation message

cat.cpp: In function 'void f(ll, ll)':
cat.cpp:15:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (i =0; i < a[p].size(); i++) {
             ~~^~~~~~~~~~~~~
cat.cpp: In function 'int main()':
cat.cpp:23:5: warning: unused variable 'i' [-Wunused-variable]
  ll i, j, t1, t2;
     ^
cat.cpp:26:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf ("%lld %lld", &t1, &t2);
   ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 7416 KB Output is correct
2 Correct 8 ms 7416 KB Output is correct
3 Correct 8 ms 7416 KB Output is correct
4 Correct 8 ms 7416 KB Output is correct
5 Correct 593 ms 7800 KB Output is correct
6 Correct 669 ms 7800 KB Output is correct
7 Correct 457 ms 7800 KB Output is correct
8 Correct 669 ms 7800 KB Output is correct
9 Correct 506 ms 7900 KB Output is correct
10 Correct 652 ms 7800 KB Output is correct
11 Correct 534 ms 7800 KB Output is correct
12 Correct 518 ms 7800 KB Output is correct
13 Correct 594 ms 7800 KB Output is correct
14 Correct 683 ms 7892 KB Output is correct
15 Correct 8 ms 7416 KB Output is correct
16 Correct 8 ms 7416 KB Output is correct
17 Correct 8 ms 7416 KB Output is correct
18 Correct 8 ms 7288 KB Output is correct
19 Correct 8 ms 7416 KB Output is correct
20 Correct 413 ms 7800 KB Output is correct
21 Correct 1065 ms 7928 KB Output is correct
22 Correct 1008 ms 7928 KB Output is correct
23 Correct 214 ms 7672 KB Output is correct
24 Correct 216 ms 7800 KB Output is correct
25 Correct 11 ms 7544 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 231 ms 22468 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 119 ms 20600 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 7416 KB Output is correct
2 Correct 8 ms 7416 KB Output is correct
3 Correct 8 ms 7416 KB Output is correct
4 Correct 8 ms 7416 KB Output is correct
5 Correct 593 ms 7800 KB Output is correct
6 Correct 669 ms 7800 KB Output is correct
7 Correct 457 ms 7800 KB Output is correct
8 Correct 669 ms 7800 KB Output is correct
9 Correct 506 ms 7900 KB Output is correct
10 Correct 652 ms 7800 KB Output is correct
11 Correct 534 ms 7800 KB Output is correct
12 Correct 518 ms 7800 KB Output is correct
13 Correct 594 ms 7800 KB Output is correct
14 Correct 683 ms 7892 KB Output is correct
15 Correct 8 ms 7416 KB Output is correct
16 Correct 8 ms 7416 KB Output is correct
17 Correct 8 ms 7416 KB Output is correct
18 Correct 8 ms 7288 KB Output is correct
19 Correct 8 ms 7416 KB Output is correct
20 Correct 413 ms 7800 KB Output is correct
21 Correct 1065 ms 7928 KB Output is correct
22 Correct 1008 ms 7928 KB Output is correct
23 Correct 214 ms 7672 KB Output is correct
24 Correct 216 ms 7800 KB Output is correct
25 Correct 11 ms 7544 KB Output is correct
26 Incorrect 231 ms 22468 KB Output isn't correct
27 Halted 0 ms 0 KB -