oj.uz

Submission #39037

# Submission time Handle Problem Language Result Execution time Memory
39037 2018-01-09T06:11:50 Z RockyB Marriage questions (IZhO14_marriage) C++14
0 / 100
 26 ms 3832 KB 
/// In The Name Of God
 
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,sse3,sse4,popcnt,abm,mmx")
 
#include <bits/stdc++.h>
 
#define f first
#define s second
 
#define pb push_back
#define pp pop_back
#define mp make_pair
 
#define sz(x) (int)x.size()
#define sqr(x) ((x) * 1ll * (x))
#define all(x) x.begin(), x.end()
 
#define Kazakhstan ios_base :: sync_with_stdio(0), cin.tie(0), cout.tie(0);
 
#define nl '\n'
#define ioi exit(0);
 
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
 
const int N = (int)32000 + 7, inf = (int)1e9 + 7, mod = (int)1e9 + 7;
const ll linf = (ll)1e18 + 7;
const int dx[] = {-1, 0, 1, 0, 1, -1, -1, 1}, dy[] = {0, 1, 0, -1, 1, -1, 1, -1};
 
using namespace std;
 
int n, m, k;
vector <int> g[N];
 
int tmr, tmr1;
int p[N];

int was[N], good[N];
int dfs(int v, int L, int R) {
	if (was[v] == tmr) return 0;
	was[v] = tmr;
	for (auto to : g[v]) {
		if (!(L <= to && to <= R)) continue; 
		if (to > R) break;
		if (p[to] == -1 || dfs(p[to], L, R)) {
			p[to] = v;
			return 1;
		}
	}
	return 0;
}
int ok(int L, int R) {
	L += m, R += m;
	memset(p, -1, sizeof(p));
	++tmr;
	++tmr1;
	for (int i = 1; i <= m; i++) {
		for (auto to : g[i]) {
			if (p[to] == -1 && L <= to && to <= R) {
				p[to] = i;
				good[i] = tmr1;
				break;
			}
		}
	}
	for (int i = 1; i <= m; i++) {
		if (good[i] == tmr1) continue;
		++tmr;
		dfs(i, L, R);
	}
	int cnt = 0;
	for (int j = m + 1; j <= n + m; j++) {
		cnt += p[j] != -1;
	}
	if (cnt == m) return 1;
	return 0;
}
int main() {
	#ifdef IOI2018
		freopen ("in.txt", "r", stdin);
	#endif
	Kazakhstan
	cin >> n >> m >> k;
	for (int i = 1; i <= k; i++) {
		int a, b;
		cin >> b >> a;
		g[a].pb(b + m);
	}
	for (int i = 1; i <= m; i++) {
		sort(all(g[i]));
	}
	int ans = 0;
	for (int i = 1; i <= n && clock() / (double)CLOCKS_PER_SEC < 0.9; i++) {
		int l = i, r = n, res = n + 1;
		while (l <= r) {
			int mid = l + r >> 1;
			if (ok(i, mid)) res = mid, r = mid - 1;
			else l = mid + 1;
		}
		ans += n - res + 1;
	}
	cout << ans;
	ioi
}

Compilation message

marriage.cpp: In function 'int main()':
marriage.cpp:98:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    int mid = l + r >> 1;
                ^

Subtask #1
0 / 100.0

# Verdict Execution time Memory Grader output
1 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
2 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
3 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
4 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
5 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
6 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
7 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
8 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
9 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
10 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
11 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
12 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
13 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
14 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
15 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
16 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
17 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
18 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
19 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
20 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
21 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
22 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
23 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
24 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
25 Runtime error 3 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
26 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
27 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
28 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
29 Runtime error 3 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
30 Runtime error 3 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
31 Runtime error 9 ms 3568 KB Execution killed because of forbidden syscall clock_gettime (228)
32 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
33 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
34 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
35 Runtime error 19 ms 3832 KB Execution killed because of forbidden syscall clock_gettime (228)
36 Runtime error 23 ms 3832 KB Execution killed because of forbidden syscall clock_gettime (228)
37 Runtime error 13 ms 3568 KB Execution killed because of forbidden syscall clock_gettime (228)
38 Runtime error 13 ms 3832 KB Execution killed because of forbidden syscall clock_gettime (228)
39 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
40 Runtime error 3 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)
41 Runtime error 6 ms 3436 KB Execution killed because of forbidden syscall clock_gettime (228)
42 Runtime error 3 ms 3436 KB Execution killed because of forbidden syscall clock_gettime (228)
43 Runtime error 9 ms 3568 KB Execution killed because of forbidden syscall clock_gettime (228)
44 Runtime error 19 ms 3832 KB Execution killed because of forbidden syscall clock_gettime (228)
45 Runtime error 6 ms 3436 KB Execution killed because of forbidden syscall clock_gettime (228)
46 Runtime error 23 ms 3832 KB Execution killed because of forbidden syscall clock_gettime (228)
47 Runtime error 16 ms 3832 KB Execution killed because of forbidden syscall clock_gettime (228)
48 Runtime error 16 ms 3832 KB Execution killed because of forbidden syscall clock_gettime (228)
49 Runtime error 26 ms 3832 KB Execution killed because of forbidden syscall clock_gettime (228)
50 Runtime error 0 ms 3304 KB Execution killed because of forbidden syscall clock_gettime (228)