oj.uz

Submission #38587

# Submission time Handle Problem Language Result Execution time Memory
38587 2018-01-04T21:00:41 Z alenam0161 Marriage questions (IZhO14_marriage) C++14
12 / 100
 1489 ms 4504 KB 
#include <bits/stdc++.h>

#define ad push_back


using namespace std;

const int Mx = 30007 , Mn = 2007;

vector<int> g[Mx],g1[Mn];
bool used1[Mx],used2[Mn];
int m1[Mx],m2[Mn];
bool try_khun(int v){
    if(used1[v])return false;
    used1[v]=true;
    for(auto to:g[v]){
        if(m1[to]==0||try_khun(m1[to])){
            m1[to]=v;
            m2[v]=to;
            return true;
        }
    }
    return false;
}
bool try_khun2(int l,int r,int v){
   if(used2[v])return false;
   used2[v]=true;
   for(auto to:g1[v]){
       if((to>l&&to<=r)&&(m2[to]==0||try_khun2(l,r,to))){
        m2[to]=v;
        m1[v]=to;
        return true;
       }
   }

   return true;
}
int main()
{
    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[v].ad(u);
        g1[u].ad(v);
    }
    long long ans=0;
    int r=0;
    int how=0;
    for(int i=1;i<=n;++i){
        while(how!=m&&r<n){
            r++;
            memset(used1,0,sizeof(used1));
            how+=try_khun(r);
        }
        if(how!=m&&r==n)break;
        if(how==m)ans+=n-r+1;
        cout<<i<<" "<<r<<endl;
        if(m2[i]==0)continue;
        int gag=m2[i];
        m1[m2[i]]=0;
        m2[i]=0;
        how--;
        memset(used2,0,sizeof(used2));
        ans+=try_khun2(i,r,gag);
    }
    cout<<ans<<"\n";
    return 0;
}

Compilation message

marriage.cpp: In function 'int main()':
marriage.cpp:41:29: 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:44:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&u,&v);
                            ^

Subtask #1
12.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 2920 KB Output isn't correct
2 Incorrect 0 ms 2920 KB Output isn't correct
3 Incorrect 0 ms 2920 KB Output isn't correct
4 Incorrect 0 ms 2920 KB Output isn't correct
5 Incorrect 0 ms 2920 KB Output isn't correct
6 Incorrect 0 ms 2920 KB Output isn't correct
7 Incorrect 0 ms 2920 KB Output isn't correct
8 Incorrect 0 ms 2920 KB Output isn't correct
9 Correct 0 ms 2920 KB Output is correct
10 Correct 0 ms 2920 KB Output is correct
11 Incorrect 0 ms 2920 KB Output isn't correct
12 Correct 0 ms 2920 KB Output is correct
13 Incorrect 0 ms 2920 KB Output isn't correct
14 Incorrect 0 ms 2920 KB Output isn't correct
15 Incorrect 0 ms 2920 KB Output isn't correct
16 Incorrect 0 ms 2920 KB Output isn't correct
17 Incorrect 0 ms 2920 KB Output isn't correct
18 Incorrect 0 ms 2920 KB Output isn't correct
19 Incorrect 0 ms 2920 KB Output isn't correct
20 Incorrect 0 ms 2920 KB Output isn't correct
21 Correct 0 ms 2920 KB Output is correct
22 Incorrect 0 ms 2920 KB Output isn't correct
23 Incorrect 0 ms 2920 KB Output isn't correct
24 Incorrect 0 ms 2920 KB Output isn't correct
25 Incorrect 0 ms 3052 KB Output isn't correct
26 Incorrect 0 ms 2920 KB Output isn't correct
27 Correct 0 ms 2920 KB Output is correct
28 Incorrect 0 ms 2920 KB Output isn't correct
29 Incorrect 3 ms 3052 KB Output isn't correct
30 Incorrect 3 ms 3052 KB Output isn't correct
31 Incorrect 13 ms 3448 KB Output isn't correct
32 Incorrect 3 ms 3052 KB Output isn't correct
33 Correct 0 ms 2920 KB Output is correct
34 Incorrect 3 ms 2920 KB Output isn't correct
35 Incorrect 16 ms 3976 KB Output isn't correct
36 Incorrect 16 ms 3976 KB Output isn't correct
37 Incorrect 9 ms 3712 KB Output isn't correct
38 Incorrect 26 ms 4240 KB Output isn't correct
39 Incorrect 53 ms 3052 KB Output isn't correct
40 Incorrect 36 ms 3184 KB Output isn't correct
41 Incorrect 86 ms 3316 KB Output isn't correct
42 Incorrect 103 ms 3448 KB Output isn't correct
43 Incorrect 149 ms 3580 KB Output isn't correct
44 Incorrect 299 ms 3976 KB Output isn't correct
45 Incorrect 59 ms 3712 KB Output isn't correct
46 Runtime error 1489 ms 4372 KB Execution timed out (wall clock limit exceeded)
47 Incorrect 976 ms 4372 KB Output isn't correct
48 Incorrect 869 ms 4372 KB Output isn't correct
49 Runtime error 1266 ms 4504 KB Execution timed out (wall clock limit exceeded)
50 Incorrect 143 ms 3052 KB Output isn't correct