Submission #592824

#	Time	Username	Problem	Language	Result	Execution time	Memory
592824		andrei_boaca	Ice Hockey World Championship (CEOI15_bobek)	C++14	100 / 100	306 ms	20880 KiB

bobek

#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;
ll n,v[45],m;
vector<ll> v1,v2;
vector<ll> s1,s2;
int main()
{
    cin>>n>>m;
    for(int i=1;i<=n;i++)
    {
        cin>>v[i];
        if(i<=n/2)
            v1.push_back(v[i]);
        else
            v2.push_back(v[i]);
    }
    if(n==1)
    {
        ll ans=1;
        if(v[1]<=m)
            ans++;
        cout<<ans;
        return 0;
    }
    ll lg1=v1.size();
    for(int mask=0;mask<(1<<lg1);mask++)
    {
        ll suma=0;
        for(int i=0;i<v1.size();i++)
            if((mask>>i)&1)
                suma+=v1[i];
        if(suma<=m)
            s1.push_back(suma);
    }
    ll lg2=v2.size();
    for(int mask=0;mask<(1<<lg2);mask++)
    {
        ll suma=0;
        for(int i=0;i<v2.size();i++)
            if((mask>>i)&1)
                suma+=v2[i];
        if(suma<=m)
            s2.push_back(suma);
    }
    sort(s1.begin(),s1.end());
    reverse(s1.begin(),s1.end());
    sort(s2.begin(),s2.end());
    ll poz=0;
    ll ans=0;
    for(ll a:s1)
    {
        while(poz<s2.size()&&s2[poz]+a<=m)
            poz++;
        poz--;
        ans+=poz+1;
    }
    cout<<ans;
    return 0;
}

Compilation message (stderr)

bobek.cpp: In function 'int main()':
bobek.cpp:31:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |         for(int i=0;i<v1.size();i++)
      |                     ~^~~~~~~~~~
bobek.cpp:41:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |         for(int i=0;i<v2.size();i++)
      |                     ~^~~~~~~~~~
bobek.cpp:54:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |         while(poz<s2.size()&&s2[poz]+a<=m)
      |               ~~~^~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10