Submission #1293424

#	Time	Username	Problem	Language	Result	Execution time	Memory
1293424		yf_yusuf	Maze (JOI23_ho_t3)	C++20	100 / 100	345 ms	205708 KiB

Main

//```//    YF YUSUF
// #include <bits/stdc++.h>
#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <algorithm>
#include <cmath>
#include <numeric>
#include <queue>
#include <stack>
#include <cassert>
#include <climits>
#include <string>
#include <cstdlib>
#include <random>
#include <iomanip>
#include <ctime>
using namespace std;
#ifdef YF_CHECK
	bool LOCAL = 1;
#else
	#pragma GCC optimize ("unroll-loops")
	#pragma GCC optimize ("inline")
	#pragma GCC optimize ("Ofast")
	#pragma GCC optimize ("O3")
	bool LOCAL = 0;
#endif
using i128   = __int128;
using ll   = int;
using ld   = long double;
using vll  = vector <ll>;
using mll  = map <ll,ll>;
using pll  = pair <ll,ll>;
using vvl  = vector <vll>;
using vpll = vector <pll>;
template<class T>T MIN(T&a,T b){a=min(a,b);return a;}
template<class T>T MAX(T&a,T b){a=max(a,b);return a;}
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define sgr v+v+1,(tl+tr)/2+1,tr
#define sgl v+v,tl,(tl+tr)/2
#define pb push_back
#define ins insert
#define S second
#define F first
mt19937_64 MT(time(0));
ll BP(ll a,ll b,ll mod=1e9+7){
	if(b==0)return 1;
	ll q=BP(a,b/2,mod);
	return ((q*q)%mod*(b%2?a:1ll))%mod;
}
ll f(ll x){return x*(x+1)/2;}
ll dup(ll a,ll b){return (a+b-1)/b;}
ll lcm(ll a,ll b){return a/__gcd(a,b)*b;}
ll invf(ll x){return (-1+sqrt(1+8*x))/2;}
ll lg(ll x){return (x ? 63 - __builtin_clzll(x) : -1);}
const ll  mod=998244353;
const ll  INF=1e18;
const ll  inf=1e9+7;
const ll  N  =4e6+7;
int r, c, n;
bool check(ll i,ll j){
	return ((1 <= i && i <= r) && (1 <= j && j <= c));
}
ll dx[] = {-1, 0, 1, 0,-1,-1, 1, 1};
ll dy[] = { 0,-1, 0, 1,-1, 1,-1, 1};

bool less_pair(pll a, pll b){
	if(a.F != b.F) return a.F < b.F;
	else return a.S > b.S;
}
void YF_MAIN(ll TEST){
	ll x1,x2,y1,y2;
	cin>>r>>c>>n>>x1>>y1>>x2>>y2;
	char a[r+2][c+2]{};
	for(int i=1;i<=r;i++){
		for(int j=1;j<=c;j++){
			cin>>a[i][j];
		}
	}
	deque <pll> q;
	vector<vpll> d(r+2, vpll(c+2, {inf, 0}));
	d[x1][y1] = {0, 0};
	q.push_front({x1, y1});
	while(q.size()){
		auto [i, j] = q.front();
		// cout<<i<<" "<<j<<" "<<d[i][j].F<<" "<<d[i][j].S<<"\n";
		q.pop_front();
		if(d[i][j].S){
			pll d_to = d[i][j];
			d_to.S--;
			for(int t=0; t<8; t++){
				ll I = i + dx[t];
				ll J = j + dy[t];
				if(!check(I, J))continue;
				if(less_pair(d_to, d[I][J])){
					d[I][J] = d_to;
					q.push_back({I, J});
				}
			}
		}
		else{
			for(int t=0; t<4; t++){
				ll I = i + dx[t];
				ll J = j + dy[t];
				if(!check(I, J))continue;
				if(a[I][J] == '.'){
					if(less_pair(d[i][j], d[I][J])){
						d[I][J] = d[i][j];
						q.push_front({I, J});
					}
				}
				else{
					pll d_to = {d[i][j].F + 1, n-1};
					if(less_pair(d_to, d[I][J])){
						d[I][J] = d_to;
						q.push_back({I, J});
					}
				}
			}
		}
	}
	cout<<d[x2][y2].F;
}
const bool TECT=0;
const bool FLSH=1;
const ll SN=1e0 + 7; ll SM[SN];
const ll FN=1e0 + 7; ll FACT[FN], inv[FN], FMOD=inf;
ll PER(ll n,ll k){return FACT[n] *inv[n-k]%FMOD;}
ll CNK(ll n,ll k){return PER(n,k)*inv[k  ]%FMOD;}
void BEFORE(){
	for(ll i=2;i<SN;i++){
		if(SM[i])continue;
		for(ll j=i;j<SN;j+=i)
			MAX(SM[j],i);
	}
	FACT[0]=inv[0]=1;
	for(int i=1;i<FN;i++){
		FACT[i]=FACT[i-1]*i%FMOD;
		inv[i]=BP(FACT[i],FMOD-2,FMOD);
	}
}
signed main(){
	// freopen(("input.txt"),"r",stdin);freopen(("output.txt"),"w",stdout);
	if(FLSH){
		ios_base::sync_with_stdio(0);
		cout.setf(ios::fixed);
		cout.precision(0);
		cout.tie(0);
		cin.tie(0);
	}
	cout<<(0 && LOCAL ? "\nYF_OUTPUT:\n\n" : "");
	int TEST=1;
	if(TECT)
		cin>>TEST;
	BEFORE();
	for(int T=1;T<=TEST;T++){
		// cout<<"Case "<<T<<": ";
		YF_MAIN(T);
		cout<<(T==TEST ? "" : "\n");
	}
	return 0;
} 
//   YF YUSUF ```

Compilation message (stderr)

Main.cpp:59:15: warning: overflow in conversion from 'double' to 'll' {aka 'int'} changes value from '1.0e+18' to '2147483647' [-Woverflow]
   59 | const ll  INF=1e18;
      |               ^~~~

• Subtask 1: 8 / 8
• Subtask 2: 19 / 19
• Subtask 3: 16 / 16
• Subtask 4: 19 / 19
• Subtask 5: 5 / 5
• Subtask 6: 19 / 19
• Subtask 7: 8 / 8
• Subtask 8: 6 / 6