제출 #992704

#제출 시각아이디문제언어결과실행 시간메모리
992704whatthemomooofun1729선물상자 (IOI15_boxes)C++17
10 / 100
1 ms600 KiB
#include <iostream> #include <algorithm> #include <utility> #include <vector> #include <stack> #include <map> #include <queue> #include <set> #include <unordered_set> #include <unordered_map> #include <cstring> #include <cmath> #include <functional> #include <cassert> #include <iomanip> #include <numeric> #include <bitset> #include <sstream> #include <chrono> #include <random> #define ff first #define ss second #define PB push_back #define sz(x) int(x.size()) #define rsz resize #define fch(xxx, yyy) for (auto xxx : yyy) // abusive notation #define all(x) (x).begin(),(x).end() #define eps 1e-9 // more abusive notation (use at your own risk): // #define int ll using namespace std; typedef long long ll; typedef long double ld; typedef unsigned long long ull; using pii = pair<int, int>; using pll = pair<ll, ll>; using vi = vector<int>; using vll = vector<ll>; // debugging void __print(int x) {std::cerr << x;} void __print(ll x) {std::cerr << x;} /* remember to uncomment this when not using THE MACRO */ void __print(unsigned x) {std::cerr << x;} void __print(ull x) {std::cerr << x;} void __print(float x) {std::cerr << x;} void __print(double x) {std::cerr << x;} void __print(ld x) {std::cerr << x;} void __print(char x) {std::cerr << '\'' << x << '\'';} void __print(const char *x) {std::cerr << '\"' << x << '\"';} void __print(const string& x) {std::cerr << '\"' << x << '\"';} void __print(bool x) {cerr << (x ? "true" : "false");} template<typename T, typename V> void __print(const pair<T, V> &x) {std::cerr << '{'; __print(x.ff); std::cerr << ", "; __print(x.ss); std::cerr << '}';} template<typename T> void __print(const T& x) {int f = 0; std::cerr << '{'; for (auto &i: x) std::cerr << (f++ ? ", " : ""), __print(i); std::cerr << "}";} void _print() {std::cerr << "]\n";} template <typename T, typename... V> void _print(T t, V... v) {__print(t); if (sizeof...(v)) std::cerr << ", "; _print(v...);} void println() {std::cerr << ">--------------------<" << endl;} #ifndef ONLINE_JUDGE #define debug(x...) cerr << "[" << #x << "] = ["; _print(x) #else #define debug(x...) #endif // templates template <class T> bool ckmin(T &a, const T &b) {return b<a ? a = b, 1 : 0;} template <class T> bool ckmax(T &a, const T &b) {return b>a ? a = b, 1 : 0;} template <class T> using gr = greater<T>; template <class T> using vc = vector<T>; template <class T> using p_q = priority_queue<T>; template <class T> using pqg = priority_queue<T, vc<T>, gr<T>>; template <class T1, class T2> using pr = pair<T1, T2>; mt19937_64 rng_ll(chrono::steady_clock::now().time_since_epoch().count()); int rng(int M) {return (int)(rng_ll()%M);} /*returns any random number in [0, M) */ // const variables constexpr int INF = (int)2e9; constexpr int MOD = 998244353; constexpr ll LL_INF = (ll)3e18; constexpr int mod = (int)1e9 + 7; constexpr ll inverse = 500000004LL; // inverse of 2 modulo 1e9 + 7 void setIO(const string& str) {// fast input/output ios_base::sync_with_stdio(false); cin.tie(nullptr); if (str.empty()) return; freopen((str + ".in").c_str(), "r", stdin); freopen((str + ".out").c_str(), "w", stdout); } ll delivery(int n, int k, int l, int* positions) { int N, K, L; N = n, K = k, L = l; vi pos; for (int i = 0; i < N; ++i) { pos.PB(positions[i]); } sort(all(pos)); vc<pii> lef, rig; int m = L/2; for (int i = 0; i < N; ++i) { if (pos[i] <= m) { if (!lef.empty() && pos[i] == lef.back().ff) { lef.back().ss++; } else { lef.PB({pos[i], 1}); } } else { if (!rig.empty() && pos[i] == rig.back().ff) { rig.back().ss++; } else { rig.PB({pos[i], 1}); } } } reverse(all(rig)); // debug(lef); //debug(rig); ll moves = 0; if (!lef.empty()) { // left side //debug("LEFT"); while (1) { int left = K, i; for (i = 0; i < sz(lef); i++) { int diff = min(left, lef[i].ss); left -= diff; lef[i].ss -= diff; if (left == 0) break; } if (i == sz(lef) || (i == sz(lef) - 1 && lef.back().ss == 0)) { //debug(lef.back().ff); moves += 2 * (ll)lef.back().ff; break; } //debug(lef[i].ff); moves += 2 * (ll)lef[i].ff; } } if (!rig.empty()) { // right side //debug("RIGHT"); while (1) { int left = K, i; for (i = 0; i < sz(rig); i++) { int diff = min(left, rig[i].ss); left -= diff; rig[i].ss -= diff; if (left == 0) break; } if (i == sz(rig) || (i == sz(rig) - 1 && rig.back().ss == 0)) { //debug(L - rig.back().ff); moves += 2 * (ll)(L - rig.back().ff); break; } //debug(L - rig[i].ff); moves += 2 * (ll)(L - rig[i].ff); } } return moves; } /* signed main() { // TIME YOURSELF !!! setIO(""); int n, k, l; cin >> n >> k >> l; int* positions = (int*)malloc(sizeof(int) * (unsigned int)n); for (int i = 0; i < n; ++i) { cin >> positions[i]; } cout << delivery(n, k, l, positions); return 0; } */ // TLE -> TRY NOT USING DEFINE INT LONG LONG // CE -> CHECK LINE 45 // 5000 * 5000 size matrices are kinda big (potential mle) // Do something, start simpler

컴파일 시 표준 에러 (stderr) 메시지

boxes.cpp: In function 'void setIO(const string&)':
boxes.cpp:88:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |     freopen((str + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
boxes.cpp:89:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   89 |     freopen((str + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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