Submission #97901

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
97901	2019-02-19T13:00:21 Z	SuperJava	Mecho (IOI09_mecho)	C++17	53 / 100	1000 ms	11648 KB

mecho

//fold
#ifndef KHALIL
#include <bits/stdc++.h>
#else
#include "header.h"
#endif
#define endl '\n'
#define mp make_pair
#define tostr(x) static_cast<ostringstream&>((ostringstream()<<dec<<x)).str()
#define rep(i,begin,end) for(auto i = begin;i < end;i++)
#define repr(i,begin,end) for(auto i = begin-1;i >= end;i--)
#define pb push_back
#define sz(a) ((int)(a).size())
#define fi first
#define se second
#define abs(a) ((a) < (0) ? (-1)*(a) : (a))
#define SQ(a) ((a)*(a))
#define eqd(a,b) (abs(a-b)<1e-9)
#define X real()
#define Y imag()
using namespace std;
typedef long long ll;
typedef long double ld;
template <typename t> t in(t q){cin >> q;return q;}
template <typename T> ostream& operator<<(ostream& os, const vector<T>& v){os << "[";for (int i = 0; i < sz(v); ++i) { os << v[i]; if (i != sz(v) - 1) os << ",";}os << "]";return os;}
template <typename T, typename S>ostream& operator<<(ostream& os, const map<T, S>& v){for (auto it : v)os << "(" << it.first << ":" << it.second << ")";return os;}
template <typename T, typename S>ostream& operator<<(ostream& os, const pair<T, S>& v){os << "(" << v.first << "," << v.second << ")";return os;}
const long double PI = acosl(-1);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng64(chrono::steady_clock::now().time_since_epoch().count());
inline int rand(int l,int r){return uniform_int_distribution<int>(l, r)(rng);}
inline ll rand(ll l,ll r){return uniform_int_distribution<ll>(l, r)(rng);}
//endfold
#define  N  (805)
#define MOD (1000000000l + 7l)
#define OO (1050000000)
#define OOL (1100000000000000000)

int b[N][N];
int z[N][N];
int n,s;

int dr[4] = {1,-1,0,0};
int dc[4] = {0,0,1,-1};

void reset(){
	rep(i,0,n){
		rep(j,0,n){
			z[i][j] = b[i][j];
		}
	}
}

void simulate(int steps){
	if(steps == 0) return;
	queue<pair<pair<int,int>,int>> q;
	rep(i,0,n){
		rep(j,0,n){
			if(z[i][j] == 1){
				q.push({{i,j},0});
			}
		}
	}
	while(!q.empty()){
		auto t = q.front(); q.pop();
		int r = t.first.first;
		int c = t.first.second;
		rep(i,0,4){
			int nr = r+dr[i];
			int nc = c+dc[i];
			if(nr >= 0 && nr < n && nc >= 0 && nc < n){
				if(z[nr][nc] != -1 && z[nr][nc] != 1){
					z[nr][nc] = 1;
					if(t.second != steps-1){
						q.push({{nr,nc},t.second+1});
					}
				}
			}
		}
	}
}

int simulate2(int steps){
	queue<pair<pair<int,int>,int>> q;
	rep(i,0,n){
		rep(j,0,n){
			if(z[i][j] == 2){
				q.push({{i,j},0});
			}
		}
	}
	if(q.size() == 0) return -1;
	while(!q.empty()){
		auto t = q.front(); q.pop();
		int r = t.first.first;
		int c = t.first.second;
		rep(i,0,4){
			int nr = r+dr[i];
			int nc = c+dc[i];
			if(nr >= 0 && nr < n && nc >= 0 && nc < n){
				if(z[nr][nc] == 0){
					z[nr][nc] = 2;
					if(t.second != steps-1){
						q.push({{nr,nc},t.second+1});
					}
				}
			}
		}
	}
	return 1;
}

int main(){
	//fold
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	cout << setprecision(10);
	//endfold
	pair<int,int> target;
	cin >> n >> s;
	rep(i,0,n){
		string q;
		cin >> q;
		map<char,int> pw = {{'T',-1},{'G',0},
					{'H',1},{'M',2},{'D',0}};
		rep(j,0,n){
			if(q[j] == 'D') target = {i,j};
			b[i][j] = pw[q[j]];
		}
	}
	int l = 1,r = n*n,best = -1;
	while(l <= r){
		int mid = (l+r)/2;
		reset();
		simulate(mid);
		bool good = false;
		while(simulate2(s) > 0){
			if(z[target.first][target.second] == 2){
				good = true;
				break;
			}
			if(z[target.first][target.second] == 1){
				good = false;
				break;
			}
			simulate(1);
			if(z[target.first][target.second] == 1){
				good = false;
				break;
			}
		}
		if(good){
			best = mid;
			l = mid+1;
		}else{
			r = mid-1;
		}
	}
	cout << best;
	return 0;
}

Subtask #1

53.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Incorrect	2 ms	384 KB	Output isn't correct
3	Correct	3 ms	384 KB	Output is correct
4	Incorrect	3 ms	384 KB	Output isn't correct
5	Incorrect	3 ms	384 KB	Output isn't correct
6	Incorrect	3 ms	384 KB	Output isn't correct
7	Execution timed out	1027 ms	9636 KB	Time limit exceeded
8	Correct	3 ms	512 KB	Output is correct
9	Correct	3 ms	384 KB	Output is correct
10	Correct	3 ms	384 KB	Output is correct
11	Correct	3 ms	384 KB	Output is correct
12	Incorrect	3 ms	688 KB	Output isn't correct
13	Incorrect	4 ms	640 KB	Output isn't correct
14	Correct	7 ms	768 KB	Output is correct
15	Correct	3 ms	512 KB	Output is correct
16	Correct	2 ms	512 KB	Output is correct
17	Correct	3 ms	512 KB	Output is correct
18	Correct	3 ms	512 KB	Output is correct
19	Correct	2 ms	512 KB	Output is correct
20	Correct	3 ms	512 KB	Output is correct
21	Correct	4 ms	640 KB	Output is correct
22	Correct	2 ms	640 KB	Output is correct
23	Correct	4 ms	640 KB	Output is correct
24	Correct	4 ms	640 KB	Output is correct
25	Correct	4 ms	768 KB	Output is correct
26	Correct	4 ms	768 KB	Output is correct
27	Correct	5 ms	768 KB	Output is correct
28	Correct	4 ms	768 KB	Output is correct
29	Correct	5 ms	896 KB	Output is correct
30	Correct	5 ms	896 KB	Output is correct
31	Correct	6 ms	896 KB	Output is correct
32	Correct	7 ms	896 KB	Output is correct
33	Correct	89 ms	3392 KB	Output is correct
34	Correct	58 ms	3376 KB	Output is correct
35	Correct	53 ms	3380 KB	Output is correct
36	Correct	79 ms	3876 KB	Output is correct
37	Correct	83 ms	3872 KB	Output is correct
38	Correct	66 ms	3848 KB	Output is correct
39	Correct	130 ms	4492 KB	Output is correct
40	Correct	146 ms	4452 KB	Output is correct
41	Correct	121 ms	4528 KB	Output is correct
42	Correct	160 ms	5076 KB	Output is correct
43	Correct	116 ms	5056 KB	Output is correct
44	Correct	101 ms	5064 KB	Output is correct
45	Correct	183 ms	5696 KB	Output is correct
46	Correct	230 ms	5624 KB	Output is correct
47	Correct	123 ms	5620 KB	Output is correct
48	Correct	234 ms	6448 KB	Output is correct
49	Correct	238 ms	6544 KB	Output is correct
50	Correct	235 ms	6372 KB	Output is correct
51	Correct	283 ms	7096 KB	Output is correct
52	Correct	274 ms	7060 KB	Output is correct
53	Correct	258 ms	7072 KB	Output is correct
54	Correct	305 ms	7896 KB	Output is correct
55	Correct	252 ms	7764 KB	Output is correct
56	Correct	239 ms	7748 KB	Output is correct
57	Correct	414 ms	8624 KB	Output is correct
58	Correct	337 ms	8772 KB	Output is correct
59	Correct	281 ms	8556 KB	Output is correct
60	Correct	327 ms	9296 KB	Output is correct
61	Correct	452 ms	9432 KB	Output is correct
62	Correct	320 ms	9252 KB	Output is correct
63	Execution timed out	1078 ms	7560 KB	Time limit exceeded
64	Execution timed out	1060 ms	6844 KB	Time limit exceeded
65	Execution timed out	1080 ms	6888 KB	Time limit exceeded
66	Execution timed out	1066 ms	7956 KB	Time limit exceeded
67	Execution timed out	1072 ms	7600 KB	Time limit exceeded
68	Execution timed out	1072 ms	9664 KB	Time limit exceeded
69	Execution timed out	1070 ms	9680 KB	Time limit exceeded
70	Execution timed out	1075 ms	9628 KB	Time limit exceeded
71	Execution timed out	1080 ms	9524 KB	Time limit exceeded
72	Correct	449 ms	9824 KB	Output is correct
73	Execution timed out	1074 ms	9740 KB	Time limit exceeded
74	Correct	494 ms	11468 KB	Output is correct
75	Execution timed out	1084 ms	11200 KB	Time limit exceeded
76	Execution timed out	1080 ms	11648 KB	Time limit exceeded
77	Execution timed out	1085 ms	11212 KB	Time limit exceeded
78	Execution timed out	1067 ms	10240 KB	Time limit exceeded
79	Correct	444 ms	11332 KB	Output is correct
80	Execution timed out	1083 ms	11452 KB	Time limit exceeded
81	Execution timed out	1071 ms	10924 KB	Time limit exceeded
82	Execution timed out	1079 ms	11392 KB	Time limit exceeded
83	Execution timed out	1008 ms	10116 KB	Time limit exceeded
84	Correct	590 ms	10440 KB	Output is correct
85	Execution timed out	1066 ms	10544 KB	Time limit exceeded
86	Execution timed out	1069 ms	10460 KB	Time limit exceeded
87	Execution timed out	1072 ms	10284 KB	Time limit exceeded
88	Execution timed out	1076 ms	9812 KB	Time limit exceeded
89	Correct	501 ms	9632 KB	Output is correct
90	Execution timed out	1075 ms	9692 KB	Time limit exceeded
91	Execution timed out	1070 ms	9792 KB	Time limit exceeded
92	Execution timed out	1072 ms	9948 KB	Time limit exceeded