oj.uz

Submission #38499

# Submission time Handle Problem Language Result Execution time Memory
38499 2018-01-04T10:16:30 Z alenam0161 Marriage questions (IZhO14_marriage) C++14
28 / 100
 1500 ms 3124 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 1e3+7;
vector<int> g[N],g1[N];
int n,m,k;
bool used[N];
int ma[N];
bool try_khun(int v){
    if(used[v]==true)return false;
    used[v]=true;
    for(auto to:g[v]){
        if(ma[to]==-1||try_khun(ma[to])){
            ma[to]=v;
            return true;
        }
    }
    return false;
}
/*
 how=0;
            memset(ma,-1,sizeof(ma));
            for(int j=l;j<=r;++j){
                memset(used,0,sizeof(used));
                how+=try_khun(j);
            }
            if(how==m)ans++;
                */
int main(){
    memset(ma,-1,sizeof(ma));
    scanf("%d%d%d",&n,&m,&k);
    for(int i=1;i<=k;++i){
        int u,v;
        scanf("%d%d",&v,&u);
        g[v].push_back(u);
        g1[u].push_back(v);
    }
    int how=0;
    long long ans=0;
    int l=1;
    for(int i=1;i<=n;++i){
        if(try_khun(i))how++;
        while(how==m){
            l++;
            if(l>n-m+1){
                  //  cout<<l<<" "<<n<<" "<<m<<" "<<i<<endl;
                cout<<ans<<endl;return 0;
            }
            how=0;
            memset(ma,-1,sizeof(ma));
            for(int j=l;j<=i;++j){
                memset(used,0,sizeof(used));
                how+=try_khun(j);
            }
        }
        ans+=l-1;
    }
    cout<<ans<<endl;
    return 0;
}

Compilation message

marriage.cpp: In function 'int main()':
marriage.cpp:32:29: 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:35:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&v,&u);
                            ^

Subtask #1
28.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 2068 KB Output isn't correct
2 Incorrect 0 ms 2068 KB Output isn't correct
3 Incorrect 0 ms 2068 KB Output isn't correct
4 Incorrect 0 ms 2068 KB Output isn't correct
5 Correct 0 ms 2068 KB Output is correct
6 Correct 0 ms 2068 KB Output is correct
7 Incorrect 0 ms 2068 KB Output isn't correct
8 Incorrect 0 ms 2068 KB Output isn't correct
9 Correct 0 ms 2068 KB Output is correct
10 Correct 0 ms 2068 KB Output is correct
11 Incorrect 0 ms 2068 KB Output isn't correct
12 Correct 0 ms 2068 KB Output is correct
13 Incorrect 0 ms 2068 KB Output isn't correct
14 Incorrect 0 ms 2068 KB Output isn't correct
15 Incorrect 0 ms 2068 KB Output isn't correct
16 Incorrect 0 ms 2068 KB Output isn't correct
17 Correct 0 ms 2068 KB Output is correct
18 Correct 0 ms 2068 KB Output is correct
19 Incorrect 0 ms 2068 KB Output isn't correct
20 Incorrect 0 ms 2068 KB Output isn't correct
21 Correct 0 ms 2068 KB Output is correct
22 Incorrect 0 ms 2068 KB Output isn't correct
23 Correct 0 ms 2068 KB Output is correct
24 Correct 0 ms 2068 KB Output is correct
25 Incorrect 13 ms 2200 KB Output isn't correct
26 Incorrect 33 ms 2068 KB Output isn't correct
27 Correct 0 ms 2068 KB Output is correct
28 Incorrect 0 ms 2068 KB Output isn't correct
29 Correct 169 ms 2200 KB Output is correct
30 Correct 133 ms 2200 KB Output is correct
31 Incorrect 426 ms 2596 KB Output isn't correct
32 Incorrect 0 ms 2200 KB Output isn't correct
33 Correct 0 ms 2068 KB Output is correct
34 Incorrect 0 ms 2068 KB Output isn't correct
35 Execution timed out 1500 ms 3124 KB Execution timed out
36 Execution timed out 1500 ms 3124 KB Execution timed out
37 Runtime error 0 ms 2068 KB Execution killed with signal 11 (could be triggered by violating memory limits)
38 Runtime error 13 ms 2860 KB Execution killed with signal 11 (could be triggered by violating memory limits)
39 Runtime error 0 ms 2068 KB Execution killed with signal 11 (could be triggered by violating memory limits)
40 Runtime error 0 ms 2068 KB Execution killed with signal 11 (could be triggered by violating memory limits)
41 Runtime error 0 ms 2068 KB Execution killed with signal 11 (could be triggered by violating memory limits)
42 Runtime error 0 ms 2068 KB Execution killed with signal 11 (could be triggered by violating memory limits)
43 Runtime error 0 ms 2068 KB Execution killed with signal 11 (could be triggered by violating memory limits)
44 Runtime error 0 ms 2200 KB Execution killed with signal 11 (could be triggered by violating memory limits)
45 Runtime error 0 ms 2068 KB Execution killed with signal 11 (could be triggered by violating memory limits)
46 Runtime error 0 ms 2068 KB Execution killed with signal 11 (could be triggered by violating memory limits)
47 Runtime error 0 ms 2068 KB Execution killed with signal 11 (could be triggered by violating memory limits)
48 Runtime error 0 ms 2068 KB Execution killed with signal 11 (could be triggered by violating memory limits)
49 Runtime error 0 ms 2068 KB Execution killed with signal 11 (could be triggered by violating memory limits)
50 Runtime error 0 ms 2068 KB Execution killed with signal 11 (could be triggered by violating memory limits)