Submission #1005006

#	Time	Username	Problem	Language	Result	Execution time	Memory
1005006		erering	Ice Hockey World Championship (CEOI15_bobek)	C++17	50 / 100	444 ms	1048576 KiB

bobek

#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define pb push_back
#define ll long long
#define int long long
const long long inf=1e18;
const int MOD=1e9+7;
const int N=41;
int a[N],n,m,ans=0;
void func(int i,int score){
    if(i==n){
        ans++;
        return;
    }
    func(i+1,score);
    if(score+a[i]<=m)func(i+1,score+a[i]);
}
signed main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin>>n>>m;
    for(int i=0;i<n;i++)cin>>a[i];
    if(n<=20)func(0,0);
    else{
        int dp[n][m+1];
        for(int j=0;j<=m;j++)dp[0][j]=0;
        dp[0][0]=1; dp[0][a[0]]=1;
        for(int i=1;i<n;i++){
            for(int j=0;j<=m;j++){
                if(j>a[i] && dp[i-1][j-a[i]]>0)dp[i][j]=dp[i-1][j-a[i]]+dp[i-1][j];
                else dp[i][j]=dp[i-1][j];
                if(j==a[i])dp[i][j]++;
            }
        }
        for(int j=0;j<=m;j++){
            ans+=dp[n-1][j];
        }
    }
    cout<<ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 0 / 10
• Subtask 6: 10 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10