Submission #378406

#	Time	Username	Problem	Language	Result	Execution time	Memory
378406		Araragi	Knjige (COCI20_knjige)	C++17	50 / 50	9 ms	1752 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("00")
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef pair<int, int> pii;
ll time() {return chrono::system_clock().now().time_since_epoch().count();}
mt19937 rnd(time());
const int inf = 1e9;
const ll inf64 = 1e18;
#define ft first
#define fin(x) ifstream cin("x.in");
#define fout(x) ofstream cout("x.out");
#define sd second
#define pb push_back
#define sz(x) (int)x.size()

int hand[2];
vector<int> a[2];
vector<string> cmd;
vector<int> num;

bool cmp(int& x, int& y) {return (a[0][x] < a[0][y]);}

void take(int fst, int scd) {
    cmd.pb((string)"UZMI " + (fst ? "D" : "L") + " " + (scd ? "D" : "L"));
    hand[fst] = a[scd].back();
    a[scd].pop_back();
}

void put(int fst, int scd) {
    cmd.pb((string)"STAVI " + (fst ? "D" : "L") + " " + (scd ? "D" : "L"));
    a[scd].pb(hand[fst]);
    hand[fst] = -1;
}

void nande(int where) {cerr << "called debug procedure...\n"; for (auto it : a[where]) cerr << it << " "; cerr << '\n'; cerr << "ended'\n";}

int main()
{
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    system("color 2");

    int n;
    cin >> n;

    a[0].resize(n);
    num.resize(n);
    for (auto& it : a[0])
        cin >> it;

    if (is_sorted(a[0].begin(), a[0].end()))
    {
        cout << "0";
        return 0;
    }

    iota(num.begin(), num.end(), 0);

    sort(num.begin(), num.end(), cmp);

    for (int i = 0; i < n; i++)
        a[0][num[i]] = i + 1;

    reverse(a[0].begin(), a[0].end());

    // 0 - LEFT, 1 - DANTE

    //int cnt = 0;

    for (int i = 0; i < n; i++)
    {
        //nande(0);

        while (a[0].back() != i + 1)
        {
            take(0, 0);
            put(0, 1);
        //    cnt++;
        }

        take(1, 0);

        //nande(0);
        //nande(1);

        while ((i > 0 ? a[1].back() != i : !a[1].empty()))
        {
            take(0, 1);
            put(0, 0);
        }

        //nande(0);
        //nande(1);

        put(1, 0);

        //nande(0);
        //nande(1);

        while (!a[1].empty())
        {
            take(0, 1);
            put(0, 0);
        }

        //nande(0);
        //nande(1);
    }

    cout << sz(cmd) << '\n';
    for (auto it : cmd)
        cout << it << '\n';
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:43:11: warning: ignoring return value of 'int system(const char*)', declared with attribute warn_unused_result [-Wunused-result]
   43 |     system("color 2");
      |     ~~~~~~^~~~~~~~~~~

• Subtask 1: 50 / 50