oj.uz

Submission #1109987

# Submission time Handle Problem Language Result Execution time Memory
1109987 2024-11-08T10:44:00 Z dsyz Mecho (IOI09_mecho) C++17
0 / 100
 1000 ms 11600 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define MAXN (1000005)
int main(){
	ios_base::sync_with_stdio(false);cin.tie(0);
	ll N,S;
	cin>>N>>S;
	pair<ll,ll> start = {-1,-1};
	pair<ll,ll> end = {-1,-1};
	char arr[N][N];
	for(ll i = 0;i < N;i++){
		for(ll j = 0;j < N;j++){
			cin>>arr[i][j];
			if(arr[i][j] == 'M') start = {i,j};
			if(arr[i][j] == 'D') end = {i,j};
		}
	}
	queue<pair<ll,ll> > q;
	ll fromhive[N][N];
	for(ll i = 0;i < N;i++){
		for(ll j = 0;j < N;j++){
			fromhive[i][j] = 1e18;
			if(arr[i][j] == 'H'){
				q.push({i,j});
				fromhive[i][j] = 0;
			}
		}
	}
	int Hy[] = {0,0,-1,1};
	int Wx[] = {-1,1,0,0};
	while(!q.empty()){
		ll y = q.front().first;
		ll x = q.front().second;
		q.pop();
		for(ll i = 0;i < 4;i++){
			ll a = y + Hy[i];
			ll b = x + Wx[i];
			if(a < 0 || a >= N || b < 0 || b >= N || arr[a][b] == 'T' || arr[a][b] == 'D'){
				continue;	
			}
			if(fromhive[a][b] == 1e18){
				q.push({a,b});
				fromhive[a][b] = fromhive[y][x] + 1;
			}
		}
	}
	ll high = 1e6 + 5;
	ll low = -1;
	while(high - low > 1){
		ll mid = (high + low) / 2;
		ll dist[N][N];
		memset(dist,-1,sizeof(dist));
		q.push(start);
		dist[start.first][start.second] = 0;
		ll time = max(0ll,mid);
		ll add = 0;
		while(true){
			queue<pair<ll,ll> > newq;
			while(!q.empty()){
				ll y = q.front().first;
				ll x = q.front().second;
				q.pop();
				newq.push({y,x});
				for(ll i = 0;i < 4;i++){
					ll a = y + Hy[i];
					ll b = x + Wx[i];
					if(a < 0 || a >= N || b < 0 || b >= N || arr[a][b] == 'T'){
						continue;	
					}
					if(dist[a][b] == -1 && dist[y][x] + 1 <= S + add && time < fromhive[a][b]){
						dist[a][b] = dist[y][x] + 1;
						q.push({a,b});
					}
				}
			}
			time++;
			add += S;
			while(!newq.empty()){
				q.push(newq.front());
				newq.pop();
			}
			if(q.empty()){
				break;
			}
		}
		if(dist[end.first][end.second] == -1){
			high = mid;
		}else{
			low = mid;
		}
	}
	cout<<low<<'\n';
}

Subtask #1
0.0 / 100.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1060 ms 336 KB Time limit exceeded
2 Execution timed out 1052 ms 336 KB Time limit exceeded
3 Execution timed out 1063 ms 336 KB Time limit exceeded
4 Execution timed out 1067 ms 336 KB Time limit exceeded
5 Execution timed out 1069 ms 336 KB Time limit exceeded
6 Execution timed out 1049 ms 336 KB Time limit exceeded
7 Execution timed out 1070 ms 11088 KB Time limit exceeded
8 Execution timed out 1065 ms 336 KB Time limit exceeded
9 Execution timed out 1049 ms 336 KB Time limit exceeded
10 Execution timed out 1065 ms 336 KB Time limit exceeded
11 Execution timed out 1057 ms 336 KB Time limit exceeded
12 Execution timed out 1060 ms 336 KB Time limit exceeded
13 Execution timed out 1067 ms 336 KB Time limit exceeded
14 Execution timed out 1055 ms 336 KB Time limit exceeded
15 Execution timed out 1071 ms 336 KB Time limit exceeded
16 Execution timed out 1066 ms 336 KB Time limit exceeded
17 Execution timed out 1063 ms 336 KB Time limit exceeded
18 Execution timed out 1063 ms 336 KB Time limit exceeded
19 Execution timed out 1052 ms 336 KB Time limit exceeded
20 Execution timed out 1047 ms 336 KB Time limit exceeded
21 Execution timed out 1050 ms 336 KB Time limit exceeded
22 Execution timed out 1060 ms 336 KB Time limit exceeded
23 Execution timed out 1051 ms 336 KB Time limit exceeded
24 Execution timed out 1056 ms 336 KB Time limit exceeded
25 Execution timed out 1069 ms 336 KB Time limit exceeded
26 Execution timed out 1069 ms 336 KB Time limit exceeded
27 Execution timed out 1077 ms 336 KB Time limit exceeded
28 Execution timed out 1075 ms 336 KB Time limit exceeded
29 Execution timed out 1059 ms 336 KB Time limit exceeded
30 Execution timed out 1065 ms 336 KB Time limit exceeded
31 Execution timed out 1057 ms 336 KB Time limit exceeded
32 Execution timed out 1055 ms 336 KB Time limit exceeded
33 Execution timed out 1075 ms 2384 KB Time limit exceeded
34 Execution timed out 1081 ms 2384 KB Time limit exceeded
35 Execution timed out 1049 ms 2384 KB Time limit exceeded
36 Execution timed out 1067 ms 2896 KB Time limit exceeded
37 Execution timed out 1073 ms 2896 KB Time limit exceeded
38 Execution timed out 1065 ms 2896 KB Time limit exceeded
39 Execution timed out 1076 ms 3664 KB Time limit exceeded
40 Execution timed out 1071 ms 3664 KB Time limit exceeded
41 Execution timed out 1066 ms 3664 KB Time limit exceeded
42 Execution timed out 1048 ms 4432 KB Time limit exceeded
43 Execution timed out 1052 ms 4432 KB Time limit exceeded
44 Execution timed out 1063 ms 4432 KB Time limit exceeded
45 Execution timed out 1071 ms 5456 KB Time limit exceeded
46 Execution timed out 1063 ms 5456 KB Time limit exceeded
47 Execution timed out 1059 ms 5468 KB Time limit exceeded
48 Execution timed out 1040 ms 6224 KB Time limit exceeded
49 Execution timed out 1058 ms 6224 KB Time limit exceeded
50 Execution timed out 1065 ms 6224 KB Time limit exceeded
51 Execution timed out 1046 ms 7248 KB Time limit exceeded
52 Execution timed out 1042 ms 7248 KB Time limit exceeded
53 Execution timed out 1069 ms 7248 KB Time limit exceeded
54 Execution timed out 1054 ms 8528 KB Time limit exceeded
55 Execution timed out 1073 ms 8528 KB Time limit exceeded
56 Execution timed out 1046 ms 8528 KB Time limit exceeded
57 Execution timed out 1056 ms 9552 KB Time limit exceeded
58 Execution timed out 1060 ms 9808 KB Time limit exceeded
59 Execution timed out 1072 ms 9808 KB Time limit exceeded
60 Execution timed out 1051 ms 11088 KB Time limit exceeded
61 Execution timed out 1052 ms 11088 KB Time limit exceeded
62 Execution timed out 1062 ms 11088 KB Time limit exceeded
63 Execution timed out 1060 ms 11080 KB Time limit exceeded
64 Execution timed out 1076 ms 11088 KB Time limit exceeded
65 Execution timed out 1055 ms 11080 KB Time limit exceeded
66 Execution timed out 1054 ms 11080 KB Time limit exceeded
67 Execution timed out 1071 ms 11080 KB Time limit exceeded
68 Execution timed out 1051 ms 11088 KB Time limit exceeded
69 Execution timed out 1062 ms 11120 KB Time limit exceeded
70 Execution timed out 1062 ms 11080 KB Time limit exceeded
71 Execution timed out 1060 ms 11080 KB Time limit exceeded
72 Execution timed out 1060 ms 11080 KB Time limit exceeded
73 Execution timed out 1076 ms 11592 KB Time limit exceeded
74 Execution timed out 1069 ms 11548 KB Time limit exceeded
75 Execution timed out 1065 ms 11504 KB Time limit exceeded
76 Execution timed out 1052 ms 11600 KB Time limit exceeded
77 Execution timed out 1051 ms 11540 KB Time limit exceeded
78 Execution timed out 1069 ms 11336 KB Time limit exceeded
79 Execution timed out 1067 ms 11336 KB Time limit exceeded
80 Execution timed out 1060 ms 11336 KB Time limit exceeded
81 Execution timed out 1061 ms 11456 KB Time limit exceeded
82 Execution timed out 1059 ms 11344 KB Time limit exceeded
83 Execution timed out 1082 ms 11336 KB Time limit exceeded
84 Execution timed out 1064 ms 11344 KB Time limit exceeded
85 Execution timed out 1068 ms 11344 KB Time limit exceeded
86 Execution timed out 1066 ms 11336 KB Time limit exceeded
87 Execution timed out 1063 ms 11336 KB Time limit exceeded
88 Execution timed out 1054 ms 11336 KB Time limit exceeded
89 Execution timed out 1072 ms 11184 KB Time limit exceeded
90 Execution timed out 1054 ms 11344 KB Time limit exceeded
91 Execution timed out 1053 ms 11336 KB Time limit exceeded
92 Execution timed out 1075 ms 11344 KB Time limit exceeded