oj.uz

Submission #90022

# Submission time Handle Problem Language Result Execution time Memory
90022 2018-12-19T17:42:08 Z Bodo171 Marriage questions (IZhO14_marriage) C++14
80 / 100
 1500 ms 2680 KB 
#include <iostream>
#include <fstream>
#include <vector>
using namespace std;
const int nmax=30005;
vector<int> v[nmax];
int l[nmax],r[nmax];
bool viz[nmax];
bool changed;
int n,m,i,j,k,a,b,p,cupl,ans;
bool cup(int x)
{
    if(viz[x])
        return 0;
    viz[x]=1;
    for(int it=0;it<v[x].size();it++)
        if(!r[v[x][it]])
    {
        l[x]=v[x][it];
        r[v[x][it]]=x;
        return 1;
    }
    for(int it=0;it<v[x].size();it++)
        if(cup(r[v[x][it]]))
    {
        l[x]=v[x][it];
        r[v[x][it]]=x;
        return 1;
    }
    return 0;
}
void cc()
{
    changed=1;
    while(changed&&cupl<m)
    {
        changed=0;
        for(j=p; j<=i; j++)
            if((!l[j])&&cup(j))
            {
                cupl++;
                changed=1;
            }
        for(j=p; j<=i; j++)
            viz[j]=0;

    }
}
int main()
{
    //freopen("data.in","r",stdin);
    ios_base::sync_with_stdio(false);
    cin>>n>>m>>k;
    for(i=1;i<=k;i++)
    {
        cin>>a>>b;
        v[a].push_back(b);
    }
    p=1;
    for(i=1;i<=n;i++)
    {
        cc();
        while(cupl==m)
        {
            if(l[p])
                r[l[p]]=0,cupl--;
            p++;
            cc();

        }
        ans+=(p-1);
    }
    cout<<ans;
    return 0;
}

Compilation message

marriage.cpp: In function 'bool cup(int)':
marriage.cpp:16:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int it=0;it<v[x].size();it++)
                  ~~^~~~~~~~~~~~
marriage.cpp:23:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int it=0;it<v[x].size();it++)
                  ~~^~~~~~~~~~~~

Subtask #1
80.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1016 KB Output is correct
2 Correct 3 ms 1148 KB Output is correct
3 Correct 3 ms 1192 KB Output is correct
4 Correct 2 ms 1192 KB Output is correct
5 Correct 2 ms 1224 KB Output is correct
6 Correct 2 ms 1224 KB Output is correct
7 Correct 3 ms 1224 KB Output is correct
8 Correct 3 ms 1224 KB Output is correct
9 Correct 3 ms 1224 KB Output is correct
10 Correct 3 ms 1224 KB Output is correct
11 Correct 3 ms 1224 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 3 ms 1272 KB Output is correct
17 Correct 3 ms 1272 KB Output is correct
18 Correct 3 ms 1272 KB Output is correct
19 Correct 3 ms 1272 KB Output is correct
20 Correct 2 ms 1272 KB Output is correct
21 Correct 2 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 6 ms 1320 KB Output is correct
26 Correct 6 ms 1320 KB Output is correct
27 Correct 4 ms 1320 KB Output is correct
28 Correct 3 ms 1320 KB Output is correct
29 Correct 21 ms 1376 KB Output is correct
30 Correct 18 ms 1376 KB Output is correct
31 Correct 16 ms 1636 KB Output is correct
32 Correct 25 ms 1636 KB Output is correct
33 Correct 7 ms 1636 KB Output is correct
34 Correct 6 ms 1636 KB Output is correct
35 Correct 23 ms 1764 KB Output is correct
36 Correct 20 ms 1768 KB Output is correct
37 Correct 31 ms 1768 KB Output is correct
38 Correct 981 ms 2040 KB Output is correct
39 Correct 230 ms 2040 KB Output is correct
40 Correct 1243 ms 2040 KB Output is correct
41 Execution timed out 1571 ms 2040 KB Time limit exceeded
42 Execution timed out 1546 ms 2040 KB Time limit exceeded
43 Execution timed out 1560 ms 2144 KB Time limit exceeded
44 Execution timed out 1560 ms 2228 KB Time limit exceeded
45 Execution timed out 1569 ms 2228 KB Time limit exceeded
46 Execution timed out 1578 ms 2508 KB Time limit exceeded
47 Execution timed out 1572 ms 2520 KB Time limit exceeded
48 Execution timed out 1556 ms 2528 KB Time limit exceeded
49 Execution timed out 1569 ms 2680 KB Time limit exceeded
50 Execution timed out 1579 ms 2680 KB Time limit exceeded