oj.uz

Submission #38474

# Submission time Handle Problem Language Result Execution time Memory
38474 2018-01-04T09:44:39 Z alenam0161 Marriage questions (IZhO14_marriage) C++14
48 / 100
 1500 ms 4008 KB 
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <algorithm>
#include <vector>
#include <cstring>
#include <cassert>
#include <cstdio>
 
#define ad push_back
 
using namespace std;
const int N = 30007;
 
int used[N];
vector<int> g[N];
int ma[N];
int qan = 0;
bool try_khun(int v){
	if (used[v])return false;
    used[v] = true;
	for (int to : g[v]){
		if (ma[to] == -1 || try_khun(ma[to])){
			//if (ma[to] == -1)qan++;
			ma[to] = v;
			return true;
		}
	}
	return false;
}
int main(){
	memset(ma, -1, sizeof(ma));
	int n, m, k;
	scanf("%d%d%d", &n, &m, &k);
	for (int i = 1; i <= k; ++i){
		int u, v;
		scanf("%d%d", &u, &v);
		g[u].ad(v);
	}
 
	int l = 1;
	long long ans = 0;
	int cnt = 0;
 
	for (int i = 1; i <= n; i++)
	{
		while (cnt == m)
		{
			assert(l <= i);
 
			bool minus = false;
			
			for (auto x : g[l])
			{
				if (ma[x] == l)
				{
					ma[x] = -1;
					minus = true;
					break;
				}
			}
 
			cnt -= minus;
			l++;
		}
        memset(used,0,sizeof(used));
		cnt += try_khun(i);
 
		if (cnt == m)
		{
			ans += n - i + 1;
		}
 
	}
 
	cout << ans << endl;
	return 0;
}

Compilation message

marriage.cpp: In function 'int main()':
marriage.cpp:33:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d", &n, &m, &k);
                             ^
marriage.cpp:36:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &u, &v);
                        ^

Subtask #1
48.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 2952 KB Output isn't correct
2 Incorrect 0 ms 2952 KB Output isn't correct
3 Incorrect 0 ms 2952 KB Output isn't correct
4 Incorrect 0 ms 2952 KB Output isn't correct
5 Correct 0 ms 2952 KB Output is correct
6 Correct 0 ms 2952 KB Output is correct
7 Correct 0 ms 2952 KB Output is correct
8 Correct 0 ms 2952 KB Output is correct
9 Correct 0 ms 2952 KB Output is correct
10 Correct 0 ms 2952 KB Output is correct
11 Correct 0 ms 2952 KB Output is correct
12 Correct 0 ms 2952 KB Output is correct
13 Incorrect 0 ms 2952 KB Output isn't correct
14 Correct 0 ms 2952 KB Output is correct
15 Incorrect 0 ms 2952 KB Output isn't correct
16 Incorrect 0 ms 2952 KB Output isn't correct
17 Correct 0 ms 2952 KB Output is correct
18 Correct 0 ms 2952 KB Output is correct
19 Correct 0 ms 2952 KB Output is correct
20 Correct 0 ms 2952 KB Output is correct
21 Correct 0 ms 2952 KB Output is correct
22 Incorrect 0 ms 2952 KB Output isn't correct
23 Correct 0 ms 2952 KB Output is correct
24 Correct 0 ms 2952 KB Output is correct
25 Correct 6 ms 3084 KB Output is correct
26 Incorrect 3 ms 2952 KB Output isn't correct
27 Correct 3 ms 2952 KB Output is correct
28 Incorrect 3 ms 2952 KB Output isn't correct
29 Incorrect 6 ms 3084 KB Output isn't correct
30 Incorrect 6 ms 3084 KB Output isn't correct
31 Correct 23 ms 3216 KB Output is correct
32 Incorrect 16 ms 3084 KB Output isn't correct
33 Correct 6 ms 2952 KB Output is correct
34 Incorrect 6 ms 2952 KB Output isn't correct
35 Correct 89 ms 3480 KB Output is correct
36 Correct 73 ms 3480 KB Output is correct
37 Correct 59 ms 3348 KB Output is correct
38 Incorrect 246 ms 3744 KB Output isn't correct
39 Incorrect 86 ms 3084 KB Output isn't correct
40 Correct 63 ms 3216 KB Output is correct
41 Incorrect 79 ms 3216 KB Output isn't correct
42 Incorrect 286 ms 3348 KB Output isn't correct
43 Incorrect 383 ms 3348 KB Output isn't correct
44 Incorrect 669 ms 3612 KB Output isn't correct
45 Incorrect 189 ms 3612 KB Output isn't correct
46 Execution timed out 1500 ms 4008 KB Execution timed out
47 Incorrect 1426 ms 3876 KB Output isn't correct
48 Incorrect 1429 ms 3876 KB Output isn't correct
49 Execution timed out 1500 ms 4008 KB Execution timed out
50 Incorrect 216 ms 3084 KB Output isn't correct