Submission #586737

#	Time	Username	Problem	Language	Result	Execution time	Memory
586737		xynex	Wall (IOI14_wall)	C++17	61 / 100	320 ms	40092 KiB

wall

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

#define ll long long
#define dl double long
#define ull unsigned long long
#define pr pair
#define vt vector
#define ff first
#define ss second
#define mp make_pair
#define sz(a) (int)a.size()
#define pb push_back
#define pf push_front
#define popB pop_back
#define popF pop_front
#define bit_count __builtin_popcount
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sp(x) fixed << setprecision(x)

template<typename T> T get_rand(T l, T r) {
  random_device rd;
  mt19937 gen(rd());
  return uniform_int_distribution<T>(l, r)(gen);
}
template<typename T> T lcm(T a, T b) { return a * (b / __gcd(a, b)); }

template<class A> void read(vt<A>& v);
template<class A, size_t S> void read(array<A, S>& a);
template<class T> void read(T& x) { cin >> x; }
void read(double& d) { string t; read(t); d = stod(t); }
void read(long double& d) { string t; read(t); d = stold(t); }
template<class H, class... T> void read(H& h, T&... t) { read(h); read(t...); }
template<class A> void read(vt<A>& x) { for (auto& a : x) read(a); }
template<class A, size_t S> void read(array<A, S>& x) { for (auto& a : x) read(a); }

string to_string(char c) { return string(1, c); }
string to_string(bool b) { return b ? "true" : "false"; }
string to_string(const char* s) { return string(s); }
string to_string(string s) { return s; }
string to_string(vt<bool> v) { string res; for (int i = 0; i < sz(v); ++i) res += char('0' + v[i]); return res; }
template<size_t S> string to_string(bitset<S> b) { string res; for (int i = 0; i < S; ++i) res += char('0' + b[i]); return res; }
template<class T> string to_string(T v) { bool f = 1; string res; for (auto x : v) { if (!f) res += ' '; f = 0; res += to_string(x); } return res; }

template<class A> void write(A x) { cout << to_string(x); }
template<class H, class... T> void write(const H& h, const T&... t) { write(h); write(t...); }

void print() { write("\n"); }
template<class H, class... T> void print(const H& h, const T&... t) { write(h); if (sizeof...(t)) write(' '); print(t...); }

void freop(string s) {
  freopen((s + ".in").c_str(), "r", stdin);
  freopen((s + ".out").c_str(), "w", stdout);
}

const int MOD = 1e9 + 7;
const int N = 3e6 + 5;
const ll INF = 9e18;
const int M = 3e3 + 5;
const dl pi = acos(-1);
const dl eps = 1e-12;
const int sq = 700;

int dx[] = {-1, 0, 1, 0};
int dy[] = {0, -1, 0, 1};
/* ll vs int*/
int mn[N], mx[N], n;
void upd(int l, int r, int val, bool whr, int tl = 0, int tr = n - 1, int v = 1) {
  val = max(mx[v], val);
  val = min(mn[v], val);
  if(tl > r || tr < l) return;
  if(tl >= l && tr <= r) {
    if(whr) mn[v] = val;
    else mx[v] = val;
    return;
  }
  int mid = (tl + tr) >> 1;
  upd(l, r, val, whr, tl, mid, v * 2); upd(l, r, val, whr, mid + 1, tr, v * 2 + 1);
}
void get(int *arr, int cur = 0, int tl = 0, int tr = n - 1, int v = 1) {
  cur = max(mx[v], cur);
  cur = min(mn[v], cur);
  if(tl == tr) {
    arr[tl] = cur;
    return;
  }
  int mid = (tl + tr) >> 1;
  get(arr, cur, tl, mid, v * 2); get(arr, cur, mid + 1, tr, v * 2 + 1);
}
void buildWall(int N, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
  n = N;
  for(int i = 1; i <= 4 * n; ++i) mn[i] = MOD;
  for(int i = k - 1; i >= 0; --i) {
    upd(left[i], right[i], height[i], op[i] - 1);
  }
  get(finalHeight);
  return;
}
/*
int main()
{
  int n;
  int k;

  int i, j;
  int status = 0;

  status = scanf("%d%d", &n, &k);
  assert(status == 2);

  int* op = (int*)calloc(sizeof(int), k);
  int* left = (int*)calloc(sizeof(int), k);
  int* right = (int*)calloc(sizeof(int), k);
  int* height = (int*)calloc(sizeof(int), k);
  int* finalHeight = (int*)calloc(sizeof(int), n);

  for (i = 0; i < k; i++){
    status = scanf("%d%d%d%d", &op[i], &left[i], &right[i], &height[i]);
    assert(status == 4);
  }

  buildWall(n, k, op, left, right, height, finalHeight);

  for (j = 0; j < n; j++)
    printf("%d\n", finalHeight[j]);

  return 0;
}*/

Compilation message (stderr)

wall.cpp: In function 'void freop(std::string)':
wall.cpp:54:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |   freopen((s + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
wall.cpp:55:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |   freopen((s + ".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 24 / 24
• Subtask 3: 29 / 29
• Subtask 4: 0 / 39