oj.uz

Submission #96055

# Submission time Handle Problem Language Result Execution time Memory
96055 2019-02-05T13:53:01 Z Kastanda Marriage questions (IZhO14_marriage) C++11
100 / 100
 851 ms 1952 KB 
#include<bits/stdc++.h>
#define pb push_back
using namespace std;
const int MAXN = 34004;
int n, m, k, ts, l, r, MC[MAXN], M[MAXN];
vector < int > Adj[MAXN];
queue < int > qu;
int DFS(int v)
{
    if (M[v] == ts)
        return 0;
    M[v] = ts;
    for (int i = 0; i < (int)Adj[v].size(); i++)
        if (l <= Adj[v][i] && Adj[v][i] <= r)
            if (MC[Adj[v][i]] == -1 || DFS(MC[Adj[v][i]]))
                return MC[Adj[v][i]] = v, 1;
    return 0;
}
inline int Match()
{
    while (qu.size())
    {
        int v = qu.front();
        qu.pop(); ts ++;
        if (!DFS(v))
            return qu.push(v), 1;
    }
    return 1;
}
int main()
{
    scanf("%d%d%d", &n, &m, &k);
    for (int i = 1; i <= k; i++)
    {
        int v, u;
        scanf("%d%d", &v, &u);
        Adj[u].pb(v);
    }
    int tot = 0;
    memset(MC, -1, sizeof(MC));
    for (int i = 1; i <= m; i++)
        qu.push(i);
    for (l = 1; l <= n; l ++)
    {
        r = max(r, l); Match();
        while (r < n && qu.size())
            r ++, Match();
        if (qu.size())
            break;
        tot += n - r + 1;
        if (MC[l] != -1)
            qu.push(MC[l]), MC[l] = -1;
    }
    return !printf("%d\n", tot);
}

Compilation message

marriage.cpp: In function 'int main()':
marriage.cpp:32:10: 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:36:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &v, &u);
         ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1272 KB Output is correct
2 Correct 3 ms 1272 KB Output is correct
3 Correct 3 ms 1272 KB Output is correct
4 Correct 3 ms 1272 KB Output is correct
5 Correct 2 ms 1272 KB Output is correct
6 Correct 3 ms 1272 KB Output is correct
7 Correct 3 ms 1272 KB Output is correct
8 Correct 2 ms 1272 KB Output is correct
9 Correct 3 ms 1272 KB Output is correct
10 Correct 2 ms 1272 KB Output is correct
11 Correct 3 ms 1272 KB Output is correct
12 Correct 3 ms 1272 KB Output is correct
13 Correct 3 ms 1272 KB Output is correct
14 Correct 3 ms 1272 KB Output is correct
15 Correct 3 ms 1272 KB Output is correct
16 Correct 2 ms 1272 KB Output is correct
17 Correct 2 ms 1276 KB Output is correct
18 Correct 3 ms 1272 KB Output is correct
19 Correct 4 ms 1272 KB Output is correct
20 Correct 3 ms 1272 KB Output is correct
21 Correct 3 ms 1272 KB Output is correct
22 Correct 3 ms 1272 KB Output is correct
23 Correct 3 ms 1272 KB Output is correct
24 Correct 3 ms 1272 KB Output is correct
25 Correct 39 ms 1272 KB Output is correct
26 Correct 7 ms 1272 KB Output is correct
27 Correct 3 ms 1272 KB Output is correct
28 Correct 3 ms 1400 KB Output is correct
29 Correct 4 ms 1272 KB Output is correct
30 Correct 4 ms 1272 KB Output is correct
31 Correct 281 ms 1656 KB Output is correct
32 Correct 12 ms 1272 KB Output is correct
33 Correct 3 ms 1272 KB Output is correct
34 Correct 5 ms 1272 KB Output is correct
35 Correct 107 ms 1784 KB Output is correct
36 Correct 78 ms 1784 KB Output is correct
37 Correct 851 ms 1764 KB Output is correct
38 Correct 20 ms 1756 KB Output is correct
39 Correct 97 ms 1400 KB Output is correct
40 Correct 6 ms 1400 KB Output is correct
41 Correct 8 ms 1400 KB Output is correct
42 Correct 8 ms 1400 KB Output is correct
43 Correct 12 ms 1528 KB Output is correct
44 Correct 19 ms 1832 KB Output is correct
45 Correct 11 ms 1532 KB Output is correct
46 Correct 51 ms 1952 KB Output is correct
47 Correct 23 ms 1784 KB Output is correct
48 Correct 21 ms 1784 KB Output is correct
49 Correct 98 ms 1932 KB Output is correct
50 Correct 232 ms 1488 KB Output is correct