oj.uz

Submission #169690

# Submission time Handle Problem Language Result Execution time Memory
169690 2019-12-22T09:30:07 Z stefdasca Bootfall (IZhO17_bootfall) C++14
0 / 100
 2 ms 636 KB 
#include<bits/stdc++.h>
#define god dimasi5eks
#pragma GCC optimize("O3")
#define fi first
#define se second
#define pb push_back
#define pf push_front
#define mod 1000000007
#define dancila 3.14159265359
#define eps 1e-9

using namespace std;

typedef long long ll;


int add(int a, int b)
{
    ll x = a+b;
    if(x >= mod)
        x -= mod;
    if(x < 0)
        x += mod;
    return x;
}
ll mul(ll a, ll b)
{
    return (a*b) % mod;
}

ll pw(ll a, ll b)
{
    ll ans = 1;
    while(b)
    {
        if(b & 1)
            ans = (ans * a) % mod;
        a = (a * a) % mod;
        b >>= 1;
    }
    return ans;
}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
long long rand_seed()
{
    long long a = rng();
    return a;
}
int n;
int v[502];

int frq[1000002];
bool dp[250002];
bool canruk(int lack)
{
    memset(dp, 0, sizeof(dp));
    int mxval = 0;
    dp[0] = 1;
    int sm = 0;
    for(int i = 1; i <= n; ++i)
        if(i != lack)
            sm += v[i];
    for(int i = 1; i <= n; ++i)
    {
        if(i == lack)
            continue;
        for(int j = mxval; j >= 0; --j)
            if(dp[j])
                dp[j + v[i]] = 1;
        mxval += v[i];
        mxval = min(mxval, sm / 2);
    }
    if(lack == 0)
    {
        if(mxval % 2 == 0 && dp[mxval / 2])
            return 1;
        return 0;
    }
    else
    {
        for(int i = 0; i <= sm/2; ++i)
            if(dp[i])
                frq[sm - 2 * i]++;
        return 1;
    }
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n;
    for(int i = 1; i <= n; ++i)
        cin >> v[i];
    sort(v+1, v+n+1);
    if(!canruk(0))
    {
        cout << 0;
        return 0;
    }
    for(int i = 1; i <= n; ++i)
        canruk(i);
    int nrok = 0;
    for(int i = 0; i <= 1000000; ++i)
        if(frq[i] == n)
            ++nrok;
    cout << nrok << '\n';
    for(int i = 0; i <= 1000000; ++i)
        if(frq[i] == n)
            cout << i << " ";
    return 0;
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 636 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 636 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 636 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 636 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 636 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 636 KB Output isn't correct
2 Halted 0 ms 0 KB -