Submission #1246290

#	Time	Username	Problem	Language	Result	Execution time	Memory
1246290		slivajan	Uplifting Excursion (BOI22_vault)	C++20	0 / 100	5093 ms	16244 KiB

vault

#include <bits/stdc++.h>
using namespace std;

using un = long long;
using vuc = vector<un>;
using vol = vector<bool>;
using puc = pair<un, un>;

#define REP(i, a, b) for (un i = (un)a; i < (un)b; i++)
#define FEAC(i, a) for (auto&& i : a)
#define vec vector
#define ALL(x) (x).begin(), (x).end()

constexpr un mINF = INT64_MIN;


int main(){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    un M, L; cin >> M >> L;

    vuc A(2*M+1); FEAC(a, A) cin >> a;


    un MAX = 505000;
    // un MAX = 10;

    if ((L > MAX) or (L < -MAX)){
        cout << "impossible\n";
        return 0;
    }

    vuc DP(2*MAX+1, mINF);

    DP[MAX+0] = 0;

    vuc newDP;
    REP(v, -M, M+1){
        if (A[M+v] == 0) continue;
        newDP = DP;
        REP(i, 0, DP.size()){
            REP(x, 1, A[M+v]+1){
                if ((i + x*v) >= DP.size()) break;
                if ((i + x*v) < 0) break;
                newDP[i + x*v] = max(newDP[i + x*v], DP[i]+x);
            }
        }

        DP = move(newDP);
    }


    if (DP[MAX+L] < 0) cout << "impossible\n";
    else cout << DP[MAX+L] << "\n";

}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3-1: 0 / 10
• Subtask 3-2: 0 / 10
• Subtask 4-1: 0 / 10
• Subtask 4-2: 0 / 10
• Subtask 5-1: 0 / 10
• Subtask 5-2: 0 / 10
• Subtask 6-1: 0 / 10
• Subtask 6-2: 0 / 10