Submission #365417

#	Time	Username	Problem	Language	Result	Execution time	Memory
365417		Falseee	Slagalica (COCI19_slagalica2)	C++17	10 / 70	80 ms	3124 KiB

slagalica

#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(){
    int n; cin >> n;
    int res[n];
    pair<int, int> st, ed;
    vector<int> cnt[2];
    for(int i = 0; i <n; ++i){
        pair<int, int>p;
        re(p);
        if(p.f == 5 || p.f == 6){
            st = p;
        }
        else if(p.f == 7 || p.f==8){
            ed = p;
        }else{
            cnt[p.f%2].pb(p.s);
        }
    }
    res[0]= st.s;
    res[n-1]=ed.s;
    sort(all(cnt[0]));
    sort(all(cnt[1]));
    int b = st.f%2;
    int e = ed.f%2;
    bool ok = 1;
    int st_5=0, st_6 = 0;
    int lstKind = 0;
    for(int i = 1; i < n-1 ; ++i){
        if((i+b)%2 == 0){
            if(st_5 == cnt[0].size()) {
                cout << -1 << endl;
                return 0;
            }
            res[i] = cnt[0][st_5];
            lstKind = 0;
            ++st_5;
        }else{
            if(st_6 == cnt[1].size()){
                cout << -1 << endl;
                return 0;
            }
            res[i] = cnt[1][st_6] ;
            lstKind = 1;
            ++st_6;
        }
    }
    if(e == 0){
        ok&= lstKind==1;
    }else{
        ok&= lstKind == 0;
    }
    if(!ok){
        cout << -1 << endl;
        return 0;
    }
    for(int i = 0; i < n; ++i){
        cout << res[i] << " ";
    }


}

Compilation message (stderr)

slagalica.cpp: In function 'int main()':
slagalica.cpp:156:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  156 |             if(st_5 == cnt[0].size()) {
      |                ~~~~~^~~~~~~~~~~~~~~~
slagalica.cpp:164:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  164 |             if(st_6 == cnt[1].size()){
      |                ~~~~~^~~~~~~~~~~~~~~~
slagalica.cpp: In function 'void usaco(std::string)':
slagalica.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);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
slagalica.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);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
slagalica.cpp: In function 'void __io::setIn(std::string)':
slagalica.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); }
      |                            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
slagalica.cpp: In function 'void __io::setOut(std::string)':
slagalica.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); }
      |                             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

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