Submission #667155

#	Time	Username	Problem	Language	Result	Execution time	Memory
667155		divad	Football (info1cup20_football)	C++14	26 / 100	2082 ms	103168 KiB

football

#include <iostream>
#include <algorithm>
#include <cstring>
#define int long long
#define MAX 1000002
using namespace std;
int t,n,k,a[MAX],nrp,tmp,s,c[MAX],lst;
bool gasit;
pair<int, int> st[MAX];

void backtrack(int pas){
    if(tmp == s){
        if((pas-1)%2 == 1){
            gasit = true;
        }
    }else{
        for(int i = 1; i <= n && !gasit; i++){
            int clst = lst;
            for(int j = 1; j <= clst && !gasit; j++){
                if(j > c[i]){
                    break;
                }
                c[i] -= j;
                tmp += j;
                st[pas] = {i, j};
                backtrack(pas+1);
                lst = j;
                c[i] += j;
                tmp -= j;
            }
            lst = clst;
        }
    }
}

void solve(){
    cin >> n >> k;
    nrp = 0;
    s = 0;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        s += a[i];
    }
    sort(a+1, a+n+1);
    memcpy(c, a, sizeof(a));
    if(k == 1){
        cout << (s%2);
    }else{
        gasit = false;
        lst = k;
        backtrack(1);
        cout << gasit;
    }
}

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> t;
    while(t--){
        solve();
    }
    return 0;
}

• Subtask 1: 26 / 26
• Subtask 2: 0 / 8
• Subtask 3: 0 / 11
• Subtask 4: 0 / 8
• Subtask 5: 0 / 16
• Subtask 6: 0 / 16
• Subtask 7: 0 / 7
• Subtask 8: 0 / 8