oj.uz

Submission #132527

# Submission time Handle Problem Language Result Execution time Memory
132527 2019-07-19T06:17:20 Z sean617 None (KOI17_cat) C++
35 / 100
 1077 ms 24432 KB 
#include <iostream>
#include <cstdio>
#include <vector>
#define N 300005
using namespace std;

typedef long long ll;
ll n, m, k, s, v[N], cnt[N], v2[N];
bool z, u[N];
vector<ll> a[N], k1, k2;
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);
	}
}

void g(ll p, ll q) {
	ll i;
	if (v2[p]) {
		s += p;
		for (p = q; p != k; p = v2[p]) s += p;
		return;
	}
	v2[p] = q;
	for (i = 0; i < a[p].size(); i++) {
		if (a[p][i] == q) continue;
		f(a[p][i], 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 (t1 > t2) swap(t1, t2);
		if (t1 == t2 -1) u[t1] = 1;
		else if (t1 == 1 && t2 == n) u[n] = 1;
		else {
			k1.push_back(t1);
			k2.push_back(t2);
		}
	}

	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;
	}
	for (i = 1; i <= n; i++) {
		if (!u[i]) break;
	}
	if (i > n) {
		for (i = 0; i < k1.size(); i++) {
			cnt[k1[i]]++;
			cnt[k2[i]]++;
		}
		for (i = 1; i <= n; i++) {
			if (cnt[i] == k1.size()) s += i;
		}
		cout << s;
		return 0;
	}
	if (n == m) {
		for (i = 1; i <= n; i++) {
			if (a[i].size() == 3) continue;
		}
		if (i > n) {
			cout << n * (n + 1) / 2;
		} else {
			k = i;
			g(i, 0);
		}
		cout << s + k;
		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 'void g(ll, ll)':
cat.cpp:30:16: 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:69:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (i = 0; i < k1.size(); i++) {
               ~~^~~~~~~~~~~
cat.cpp:74:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (cnt[i] == k1.size()) s += i;
        ~~~~~~~^~~~~~~~~~~~
cat.cpp:40:9: 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 606 ms 8048 KB Output is correct
6 Correct 668 ms 7928 KB Output is correct
7 Correct 455 ms 8056 KB Output is correct
8 Correct 677 ms 7928 KB Output is correct
9 Correct 499 ms 8056 KB Output is correct
10 Correct 623 ms 7928 KB Output is correct
11 Correct 514 ms 8056 KB Output is correct
12 Correct 511 ms 8056 KB Output is correct
13 Correct 614 ms 7928 KB Output is correct
14 Correct 704 ms 7928 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 7416 KB Output is correct
19 Correct 8 ms 7416 KB Output is correct
20 Correct 410 ms 7928 KB Output is correct
21 Correct 1041 ms 8056 KB Output is correct
22 Correct 1077 ms 7928 KB Output is correct
23 Correct 223 ms 7800 KB Output is correct
24 Correct 219 ms 7928 KB Output is correct
25 Correct 8 ms 7416 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 238 ms 24432 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 119 ms 18296 KB Output is correct
2 Correct 117 ms 17596 KB Output is correct
3 Correct 124 ms 17524 KB Output is correct
4 Correct 121 ms 17580 KB Output is correct
5 Correct 121 ms 17644 KB Output is correct
6 Correct 118 ms 17656 KB Output is correct
7 Correct 118 ms 17756 KB Output is correct
8 Correct 117 ms 17656 KB Output is correct
9 Correct 117 ms 17656 KB Output is correct
10 Correct 139 ms 21092 KB Output is correct
11 Correct 138 ms 21084 KB Output is correct
12 Correct 139 ms 21028 KB Output is correct
13 Correct 142 ms 21068 KB Output is correct
14 Correct 138 ms 21092 KB Output is correct
15 Correct 157 ms 21332 KB Output is correct
16 Correct 156 ms 21348 KB Output is correct
17 Correct 161 ms 21416 KB Output is correct
18 Correct 157 ms 21324 KB Output is correct
19 Correct 159 ms 21444 KB Output is correct

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 606 ms 8048 KB Output is correct
6 Correct 668 ms 7928 KB Output is correct
7 Correct 455 ms 8056 KB Output is correct
8 Correct 677 ms 7928 KB Output is correct
9 Correct 499 ms 8056 KB Output is correct
10 Correct 623 ms 7928 KB Output is correct
11 Correct 514 ms 8056 KB Output is correct
12 Correct 511 ms 8056 KB Output is correct
13 Correct 614 ms 7928 KB Output is correct
14 Correct 704 ms 7928 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 7416 KB Output is correct
19 Correct 8 ms 7416 KB Output is correct
20 Correct 410 ms 7928 KB Output is correct
21 Correct 1041 ms 8056 KB Output is correct
22 Correct 1077 ms 7928 KB Output is correct
23 Correct 223 ms 7800 KB Output is correct
24 Correct 219 ms 7928 KB Output is correct
25 Correct 8 ms 7416 KB Output is correct
26 Incorrect 238 ms 24432 KB Output isn't correct
27 Halted 0 ms 0 KB -