Submission #367963

#	Time	Username	Problem	Language	Result	Execution time	Memory
367963		Falseee	Knjige (COCI20_knjige)	C++17	50 / 50	46 ms	1528 KiB

Main

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


// c++ template (stolen from AmandOza) !

#define MOD (int)1e9+7
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define mt make_tuple
#define lb lower_bound
#define ub upper_bound
#define f first
#define s second
#define resz resize

#define sz(x) int((x).size())
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()

#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define F0R(i, a) for (int i = 0; i < (a); i++)
#define FORd(i, a, b) for (int i = (b)-1; i >= (a); i--)
#define F0Rd(i, a) for (int i = (a)-1; i >= 0; i--)
#define trav(a, x) for (auto &a : x)


#define L1(u, ...) [&](auto &&u) { return __VA_ARGS__; }
#define L2(u, v, ...) [&](auto &&u, auto &&v) { return __VA_ARGS__; }

#define sort_by(x, y) sort(all(x), [&](const auto &l, const auto &r) { return y; })

using ll = long long;
using vi = vector<int>;
using vvi = vector<vi>;
using vll = vector<ll>;
using vvll = vector<vll>;
using vb = vector<bool>;
using vd = vector<double>;
using vs = vector<string>;

using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pdd = pair<double, double>;

using vpii = vector<pii>;
using vpll = vector<pll>;
using vpdd = vector<pdd>;

template <typename T> void ckmin(T &a, const T &b) { a = min(a, b); }
template <typename T> void ckmax(T &a, const T &b) { a = max(a, b); }

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
void usaco(string filename) {
    // #pragma message("be careful, freopen may be wrong")
	freopen((filename + ".in").c_str(), "r", stdin);
	freopen((filename + ".out").c_str(), "w", stdout);
}
namespace __input {
    template <class T1, class T2> void re(pair<T1, T2> &p);
    template <class T> void re(vector<T> &a);
    template <class T, size_t SZ> void re(array<T, SZ> &a);

    template <class T> void re(T &x) { cin >> x; }
    void re(double &x) { string t; re(t); x = stod(t); }
    template <class Arg, class... Args> void re(Arg &first, Args &...rest) { re(first); re(rest...); }

    template <class T1, class T2> void re(pair<T1, T2> &p) { re(p.f, p.s); }
    template <class T> void re(vector<T> &a) { F0R (i, sz(a)) re(a[i]); }
    template <class T, size_t SZ> void re(array<T, SZ> &a) { F0R (i, SZ) re(a[i]); }
}
using namespace __input;

namespace __output {
    template <typename T> struct is_outputtable { template <typename C> static constexpr decltype(declval<ostream &>() << declval<const C &>(), bool()) test(int) { return true; } template <typename C> static constexpr bool test(...) { return false; } static constexpr bool value = test<T>(int()); };
    template <class T, typename V = decltype(declval<const T &>().begin()), typename S = typename enable_if<!is_outputtable<T>::value, bool>::type> void pr(const T &x);

    template <class T, typename V = decltype(declval<ostream &>() << declval<const T &>())> void pr(const T &x) { cout << x; }
        template <class T1, class T2> void pr(const pair<T1, T2> &x);
    template <class Arg, class... Args> void pr(const Arg &first, const Args &...rest) { pr(first); pr(rest...); }

    template <class T, bool pretty = true> void prContain(const T &x) { if (pretty) pr("{"); bool fst = 1; for (const auto &a : x) pr(!fst ? pretty ? ", " : " " : "", a), fst = 0; if (pretty) pr("}"); }

    template <class T> void pc(const T &x) { prContain<T, false>(x); pr("\n"); }
    template <class T1, class T2> void pr(const pair<T1, T2> &x) { pr("{", x.f, ", ", x.s, "}"); }
    template <class T, typename V, typename S> void pr(const T &x) { prContain(x); }

    void ps() { pr("\n"); }
    template <class Arg> void ps(const Arg &first) { pr(first); ps(); }
    template <class Arg, class... Args> void ps(const Arg &first, const Args &...rest) { pr(first, " "); ps(rest...); }
}
using namespace __output;

#define TRACE(x) x
#define __pn(x) pr(#x, " = ")
#ifdef NOAM_LOCAL
#define pd(...) pr("\033[1;31m"), __pn((__VA_ARGS__)), ps(__VA_ARGS__), pr("\033[0m"), cout << flush
#else
#define pd(...)
#endif

namespace __algorithm {
    template <typename T> void dedup(vector<T> &v) { sort(all(v)); v.erase(unique(all(v)), v.end()); }
    template <typename T> typename vector<T>::const_iterator find(const vector<T> &v, const T &x) { auto it = lower_bound(all(v), x); return it != v.end() && *it == x ? it : v.end(); }
    template <typename T> size_t index(const vector<T> &v, const T &x) { auto it = find(v, x); assert(it != v.end() && *it == x); return it - v.begin(); }
    template <typename T1, typename T2> typename vector<pair<T1, T2>>::iterator lower_bound(const vector<pair<T1, T2>> &v, const T1 &x) { return lower_bound(all(v), x, [](pair<T1, T2> a, pair<T1, T2> b) { return a.f < b.f; }); }
    template <typename T1, typename T2> typename vector<pair<T1, T2>>::iterator upper_bound(const vector<pair<T1, T2>> &v, const T1 &x) { return upper_bound(all(v), x, [](pair<T1, T2> a, pair<T1, T2> b) { return a.f < b.f; }); }
    template <typename I, typename B, typename E> struct reversed { I &v_; explicit reversed(I &v) : v_{v} {} B begin() const { return rbegin(v_); } E end() const { return rend(v_); } };
}
using namespace __algorithm;

struct __monostate {
    friend istream &operator>>(istream &is, const __attribute__((unused)) __monostate &ms) { return is; }
    friend ostream &operator<<(ostream &os, const __attribute__((unused)) __monostate &ms) { return os; }
} ms;

namespace __io {
    void setIn(string s) { freopen(s.c_str(), "r", stdin); }
    void setOut(string s) { freopen(s.c_str(), "w", stdout); }
    void setIO() { ios_base::sync_with_stdio(0); cin.tie(0); cout << setprecision(15); }
}
using namespace __io;


const int mxN = 0;

int main(){
    ios_base::sync_with_stdio();
    cin.tie(0);
    string prendre = "UZMI", mettre = "STAVI";
    cout.tie(0);
    int n; cin >> n;
    vi ar(n);
    re(ar);
    // pd(ar);
    vi dummy = ar;
    sort(all(dummy));
    reverse(all(dummy));
    int cur;

    deque<int> left, right;
    F0R(i, n){
        left.push_back(ar[i]);
    }
    vector<int> tries;
    int hand_left=-1, hand_right= -1;
    vector<string> op;
    for(int i = 0; i <n ; ++i){
        // cur = dummy[i];
        for(int j = 0; j < n-i; ++j){
            if(left.front() == dummy[i] && hand_left == -1){ // le haut le l'étagere de gauche est le plus gros qu'on peut avoir
                // cout << "happens " << endl;
                hand_left = dummy[i];
                op.pb(prendre + " L L");
                left.pop_front();
            }else{// on doit utiliser la main droite car c'est pas celui qui nous interesse
                if(hand_right != -1){
                    op.pb(mettre+" D D");
                    right.push_front(hand_right); // on met la brique de la main droite dans l'étagere de droite
                    hand_right = -1;
                }
                op.pb(prendre+" D L");
                hand_right = left.front(); // on pioche unenouvelle brique
                left.pop_front();
            }
        }
        if(hand_right !=-1){
            op.pb(mettre+" D D"); // si la main droite est prise, la libere en mettant la brique dans l'étagere droite
            right.push_front(hand_right);
            hand_right = -1;
        }


        // a la fin, on a juste le plus gros dans la main de droite , l'étagere de gauche a les briques ordonnées en épaisseur mais il en reste dans celle de droite
        // donc on veut remettre tout dans létagere de gauche pour que celle de droite soit vide
        op.pb(mettre+ " L L");
        left.push_front(hand_left);
        hand_left = -1;
        // cout << "left_back_sorted: " << endl;
        // pd(left);

        while(!right.empty()){
            op.pb(prendre+" D D");
            op.pb(mettre+" D L");
            left.push_front(right.front());
            right.pop_front();
        }
        // cout << "left normal : "<< endl;
        // pd(left);

    }
    cout << op.size() << endl;
    F0R(i, op.size()){
        cout << op[i]<< endl;
    }
    // cout << endl;
    // while(!left.empty()){
    //     cout <<left.front() << endl;
    //     left.pop_front();
    // }
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:23:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 | #define F0R(i, a) for (int i = 0; i < (a); i++)
      |                                     ^
Main.cpp:194:5: note: in expansion of macro 'F0R'
  194 |     F0R(i, op.size()){
      |     ^~~
Main.cpp:140:9: warning: unused variable 'cur' [-Wunused-variable]
  140 |     int cur;
      |         ^~~
Main.cpp: In function 'void usaco(std::string)':
Main.cpp:57:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   57 |  freopen((filename + ".in").c_str(), "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:58:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   58 |  freopen((filename + ".out").c_str(), "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp: In function 'void __io::setIn(std::string)':
Main.cpp:119:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  119 |     void setIn(string s) { freopen(s.c_str(), "r", stdin); }
      |                            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
Main.cpp: In function 'void __io::setOut(std::string)':
Main.cpp:120:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  120 |     void setOut(string s) { freopen(s.c_str(), "w", stdout); }
      |                             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 50 / 50