Submission #823374

#	Time	Username	Problem	Language	Result	Execution time	Memory
823374		tolbi	Paint By Numbers (IOI16_paint)	C++17	100 / 100	281 ms	27304 KiB

paint

#pragma optimize("Bismillahirrahmanirrahim")
//█▀█─█──█──█▀█─█─█
//█▄█─█──█──█▄█─█■█
//█─█─█▄─█▄─█─█─█─█
//ahmet23 orz...
//FatihSultanMehmedHan(ortanca da orz)
//AbdulhamidHan
//YavuzSultanSelimHan
#define author tolbi
#include <bits/stdc++.h>
using namespace std;
template<typename X, typename Y> istream& operator>>(istream& is, pair<X,Y> &pr){return is>>pr.first>>pr.second;}
template<typename X, typename Y> ostream& operator<<(ostream& os, pair<X,Y> pr){return os<<pr.first<<" "<<pr.second;}
template<typename T> istream& operator>>(istream& is, vector<T> &arr){for (auto &it : arr) is>>it;return is;}
template<typename T> ostream& operator<<(ostream& os, vector<T> arr){for (auto &it : arr) os<<it<<" ";return os;}
template<typename T, size_t Y> istream& operator>>(istream& is, array<T,Y> &arr){for (auto &it : arr) is>>it;return is;}
template<typename T, size_t Y> ostream& operator<<(ostream& os, array<T,Y> arr){for (auto &it : arr) os<<it<<" ";return os;}
template<typename T> void coutarr(T __arr){for (auto &it : __arr){cout<<it<<" ";}cout<<endl;}
#define deci(x) int x;cin>>x;
#define decstr(x) string x;cin>>x;
#define endl '\n'
#define sortarr(x) sort(x.begin(), x.end())
#define sortrarr(x) sort(x.rbegin(), x.rend())
#define rev(x) reverse(x.begin(), x.end())
#define vint(x) vector<int> x
#define tol(bi) (1LL<<((int64_t)(bi)))
typedef long long ll;
const int MOD = 1e9+7;
mt19937 ayahya(chrono::high_resolution_clock().now().time_since_epoch().count());
#include "paint.h"

#include <cstdlib>
string s;
int n,m;
vector<int> c;
vector<int> say1;
vector<int> say2;
vector<bitset<100>> dp;
vector<bitset<100>> vis;
vector<int> pref;
vector<int> pref2;
inline bool ava (int l, int r){
	int hyd = 0;
	if (l) hyd=pref[l-1];
	return (pref[r]==hyd);
}
inline bool arax (int l, int r){
	int hyd = 0;
	if (l) hyd=pref2[l-1];
	return (pref2[r]!=hyd);
}
bool f(int node, int flag){
	if (flag>=m){
		if (node>=n) return true;
		if (arax(node,n-1)) return false;
		if (node<=n-1){
			say2[node]++;
		}
		return true;
	}
	if (node>=n) return false;
	if (vis[node][flag]) return dp[node][flag];
	vis[node][flag]=1;
	dp[node][flag]=0;
	int l = node;
	int r = node+c[flag]-1;
	if (r>=n) return false;
	if (s[node]!='X' && f(node+1,flag)) {
		if (node<n) say2[node]++;
		if (node+1<n) say2[node+1]--;
		dp[node][flag]=1;
	}
	if (ava(l,r) && (r==n-1 || s[r+1]!='X') && f(r+2,flag+1)) {
		if (l<n) say1[l]++;
		if (r+1<n) say1[r+1]--;
		if (r+1<n) say2[r+1]++;
		if (r+2<n) say2[r+2]--;
		dp[node][flag]=1;
	}
	return dp[node][flag];
}
string solve_puzzle(string _s, vector<int> _c) {
	s=_s;
	c=_c;
	n = s.length();
	m = c.size();
	dp.resize(n);
	say1.resize(n+1);
	say2.resize(n+1);
	vis.resize(n);
	string rval = s;
	pref.resize(n);
	pref2.resize(n);
	for (int i = 0; i < n; i++){
		if (s[i]=='_') pref[i]=1;
		if (i) pref[i]+=pref[i-1];
		if (s[i]=='X') pref2[i]=1;
		if (i) pref2[i]+=pref2[i-1];
	}
	f(0,0);
	vector<int> ans(n,0);
	int cr1 = 0;
	int cr2 = 0;
	for (int i = 0; i < n; i++){
		cr1+=say1[i];
		cr2+=say2[i];
		ans[i]|=(cr1>0);
		ans[i]|=(cr2>0)*2;
		rval[i]='?';
		assert(ans[i]>0);
		if (ans[i]==1) rval[i]='X';
		else if (ans[i]==2) rval[i]='_';
	}
	return rval;
}

Compilation message (stderr)

paint.cpp:1: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    1 | #pragma optimize("Bismillahirrahmanirrahim")
      |

• Subtask 1: 7 / 7
• Subtask 2: 3 / 3
• Subtask 3: 22 / 22
• Subtask 4: 27 / 27
• Subtask 5: 21 / 21
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10