Submission #414111

#	Time	Username	Problem	Language	Result	Execution time	Memory
414111		Pichon5	Ice Hockey World Championship (CEOI15_bobek)	C++17	100 / 100	490 ms	20780 KiB

bobek

#include<bits/stdc++.h>
#define lcm(a,b) (a/__gcd(a,b))*b
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define ll long long int
#define vi vector<int>
#define vll vector<ll>
#define pb push_back
#define F first
#define S second
#define mp make_pair
using namespace std;

vll A;
vll B;
ll m,x,res=1,sum;
vll SA,SB;
int n;
int main()
{
    cin>>n;
    cin>>m;
    for(int i=0;i<n/2;i++){
        cin>>x;
        A.pb(x);
    }
    for(int i=0;i<(n+1)/2;i++){
        cin>>x;
        B.pb(x);
    }
    n=A.size();
    for(int i=0;i<(1<<n);i++){
        sum=0;
        for(int l=0;l<n;l++){
            if((1<<l)&i){
                sum+=A[l];
            }
        }
        if(sum<=m && sum>0){
            res++;
            SA.pb(sum);
        }
    }
    n=B.size();
    for(int i=0;i<(1<<n);i++){
        sum=0;
        for(int l=0;l<n;l++){
            if((1<<l)&i){
                sum+=B[l];
            }
        }
        if(sum<=m && sum>0){
            res++;
            SB.pb(sum);
        }
    }
    sort(SA.begin(),SA.end());
    for(int i=0;i<SB.size();i++){
        int b=0,e=SA.size();e--;
        int pos=-1;
        while(b<=e){
            int mid=(b+e)/2;
            if(SB[i]+SA[mid]<=m){
                pos=mid;
                    b=mid+1;
            }else{
                e=mid-1;
            }
        }
        res+=pos+1;
    }
    cout<<res<<endl;


    return 0;
}

Compilation message (stderr)

bobek.cpp: In function 'int main()':
bobek.cpp:57:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     for(int i=0;i<SB.size();i++){
      |                 ~^~~~~~~~~~

• 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