oj.uz

Submission #377639

# Submission time Handle Problem Language Result Execution time Memory
377639 2021-03-14T14:28:40 Z wildturtle Table Tennis (info1cup20_tabletennis) C++14
34 / 100
 380 ms 21868 KB 
#include<bits/stdc++.h>
using namespace std;
long long a,b,c,d,i,e,f,g,n,m,k,l,cnt,A[500005];
map <long long,long long> mp,mp1;
vector <long long> v;
set <long long> st;
set <long long>::iterator it;
long long check(long long sum) {
    for(long long i=1;i<=n;i++) mp1[A[i]]++;
    cnt=0; v.clear();
    for(long long i=1;i<=n;i++) {
        if(mp1[A[i]]==0) continue;
        mp1[A[i]]--;
        if(mp1[sum-A[i]]>=1) {
            cnt++; mp1[sum-A[i]]=0; 
            v.push_back(A[i]);
            v.push_back(sum-A[i]);
            if(cnt==(n-k)/2) break;
        }
    }
    mp1.clear();
    if(cnt>=(n-k)/2) return 1;
    else return 0;
}
int main() {
    cin>>n>>k;
    n+=k;
    for(long long i=1;i<=n;i++) {
        cin>>A[i];
    }
    sort(A+1,A+1+n);
    //if(n>=4*k) {
        for(long long i=1;i<=2*k;i++) {
            for(long long j=n-2*k+1;j<=n;j++) {
                if(i==j) continue;
                mp[A[i]+A[j]]++;
            }
        }
        for(long long i=1;i<=2*k;i++) {
            for(long long j=n-2*k+1;j<=n;j++) {
                if(mp[A[i]+A[j]]>=k) st.insert(A[i]+A[j]);
            }
        }
        for(it=st.begin();it!=st.end();it++) {
            if(check(*it)) break;
        }
        sort(v.begin(),v.end());
        for(long long i=0;i<v.size();i++)
        cout<<v[i]<<" ";
    /*}
    else {
        for(long long i=1;i<=n;i++) {
            for(long long j=i+1;j<=n;j++) {
                if(check(A[i]+A[j])) { l=1; break; }
            }
            if(l==1) break;
        }
        sort(v.begin(),v.end());
        for(long long i=0;i<v.size();i++)
        cout<<v[i]<<" ";
    }*/
}

Compilation message

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:48:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         for(long long i=0;i<v.size();i++)
      |                           ~^~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 620 KB Output is correct
2 Correct 3 ms 492 KB Output is correct
3 Correct 3 ms 492 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 2176 KB Output is correct
2 Correct 380 ms 21868 KB Output is correct
3 Correct 167 ms 13660 KB Output is correct
4 Correct 169 ms 13788 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 257 ms 18964 KB Output is correct
2 Correct 167 ms 13788 KB Output is correct
3 Correct 358 ms 20496 KB Output is correct
4 Correct 176 ms 13660 KB Output is correct

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 1132 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -

Subtask #5
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Incorrect 1 ms 364 KB Unexpected end of file - int32 expected

Subtask #6
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 396 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -

Subtask #7
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -

Subtask #8
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 294 ms 9324 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -