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Submission #35266

# Submission time Handle Problem Language Result Execution time Memory
35266 2017-11-19T14:08:13 Z dqhungdl Bootfall (IZhO17_bootfall) C++14
0 / 100
 0 ms 3008 KB 
#include <bits/stdc++.h>
using namespace std;

const int N=122501;
int n,sum,a[505],C[250005];
bitset<N> f;
vector<int> rs;

bool Special()
{
    if(sum%2==1)
        return false;
    f[0]=1;
    for(int i=1;i<=n;i++)
        f|=(f<<a[i]);
    return f[sum/2];
}

void Check(int pos)
{
    f.reset();
    f[0]=1;
    for(int i=1;i<=n;i++)
        if(i!=pos)
            f|=(f<<a[i]);
    for(int i=0;i<(sum-a[pos]+1)/2;i++)
        if(f[i]==1)
            C[sum-a[pos]-2*i]++;
}

int main()
{
    freopen("TEST.INP","r",stdin);
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
        sum+=a[i];
    }
    if(Special()==false)
    {
        cout<<0;
        return 0;
    }
    for(int i=1;i<=n;i++)
        Check(i);
    for(int i=1;i<=sum;i++)
        if(C[i]==n)
            rs.push_back(i);
    cout<<rs.size()<<"\n";
    for(int i=0;i<rs.size();i++)
        cout<<rs[i]<<' ';
}

Compilation message

bootfall.cpp: In function 'int main()':
bootfall.cpp:51:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<rs.size();i++)
                  ^
bootfall.cpp:33:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen("TEST.INP","r",stdin);
                                  ^

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 3008 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 3008 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 3008 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 3008 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 3008 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 3008 KB Output isn't correct
2 Halted 0 ms 0 KB -