제출 #870256

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
870256		GordonRemzi007	Ice Hockey World Championship (CEOI15_bobek)	C++17	70 / 100	1065 ms	300000 KiB

bobek

#include <iostream>
#include <vector>
#define int long long

using namespace std;

int n, m, res = 0;
vector<int> a;
void dfs(int i, int sum) {
    if(i == n) {
        res++;
        return;
    }
    if(sum+a[i] <= m) dfs(i+1, sum+a[i]);
    dfs(i+1, sum);
}

signed main() {
    cin >> n >> m;
    a = vector<int>(n);
    for(int i = 0; i < n; i++) cin >> a[i];
    if(m > 1e6) {
        dfs(0, 0);
    } else {
        vector<vector<int>> dp(n+1, vector<int>(m+1));
        dp[0][0] = 1;
        for(int i = 1; i <= n; i++) {
            for(int j = 0; j <= m; j++) {
                dp[i][j] = dp[i-1][j]+(j>=a[i-1] ? dp[i-1][j-a[i-1]] : 0);
            //cout << dp[i][j] << " ";
            }
        //cout << "\n";
        }
        for(int i = 0; i <= m; i++) res+=dp[n][i];
    }
    cout << res << "\n";
}

• 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: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10