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답안 #60037

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
60037 2018-07-23T13:38:49 Z nvmdava Mecho (IOI09_mecho) C++17
16 / 100
 1000 ms 27016 KB 
#include <bits/stdc++.h>
#define mp make_pair
#define ff first
#define ss second
using namespace std;
int n,s;
int t[802][802];
char c[802][802];
int dx[4] = {0, 0, 1, -1};
int dy[4] = {1, -1, 0, 0};

bool pos(int x,int y, int now){
	for(int i = 0; i < 4; i++){
		if(c[x + dx[i]][y + dy[i]]=='D'){
			return 1;
		}
		if(c[x + dx[i]][y + dy[i]]=='G'&&t[x + dx[i]][y + dy[i]] > now + 1){
			c[x + dx[i]][y + dy[i]]=='T';
			if(pos(x + dx[i],y + dy[i],now+1)){
				c[x + dx[i]][y + dy[i]]=='G';
				return 1;
			};
			c[x + dx[i]][y + dy[i]]=='G';
		}
	}
	return 0;
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int i,j,xx,yy;
	cin>>n>>s;
	queue<pair<int, int > > q;
	for(i = 1; i <= n; i++){
		for(j = 1; j <= n; j++){
			cin>>c[i][j];
			if(c[i][j]=='H'){
				q.push(mp(i,j));
			} else if(c[i][j]=='M'){
				xx=i;
				yy=j;
			}
		}
	}
	int x,y;
	while(!q.empty()){
		x=q.front().ff;
		y=q.front().ss;
		q.pop();
		for(i=0;i<4;i++){
			if(c[x + dx[i]][y + dy[i]]=='G'&&t[x + dx[i]][y + dy[i]]==0){
				t[x + dx[i]][y + dy[i]] = t[x][y]+s;
				q.push(mp(x + dx[i] , y + dy[i]));
			}
		}
	}
	int l = -1 , r = 1e9,m;
	while(l + 1 != r){
		m = (l + r) / 2;
		if(pos(xx,yy,m)){
			l = m;
		} else {
			r = m;
		}
	}
	cout<<l/s;
}

Compilation message

mecho.cpp: In function 'bool pos(int, int, int)':
mecho.cpp:18:27: warning: statement has no effect [-Wunused-value]
    c[x + dx[i]][y + dy[i]]=='T';
    ~~~~~~~~~~~~~~~~~~~~~~~^~~~~
mecho.cpp:20:28: warning: statement has no effect [-Wunused-value]
     c[x + dx[i]][y + dy[i]]=='G';
     ~~~~~~~~~~~~~~~~~~~~~~~^~~~~
mecho.cpp:23:27: warning: statement has no effect [-Wunused-value]
    c[x + dx[i]][y + dy[i]]=='G';
    ~~~~~~~~~~~~~~~~~~~~~~~^~~~~
mecho.cpp: In function 'int main()':
mecho.cpp:62:9: warning: 'yy' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(pos(xx,yy,m)){
      ~~~^~~~~~~~~
mecho.cpp:62:9: warning: 'xx' may be used uninitialized in this function [-Wmaybe-uninitialized]

Subtask #1
16.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 3 ms 492 KB Output is correct
3 Correct 3 ms 572 KB Output is correct
4 Correct 3 ms 572 KB Output is correct
5 Correct 5 ms 572 KB Output is correct
6 Correct 117 ms 624 KB Output is correct
7 Execution timed out 1081 ms 4576 KB Time limit exceeded
8 Correct 3 ms 4576 KB Output is correct
9 Correct 4 ms 4576 KB Output is correct
10 Correct 2 ms 4576 KB Output is correct
11 Correct 2 ms 4576 KB Output is correct
12 Incorrect 4 ms 4576 KB Output isn't correct
13 Execution timed out 1071 ms 4576 KB Time limit exceeded
14 Execution timed out 1081 ms 4576 KB Time limit exceeded
15 Execution timed out 1072 ms 4576 KB Time limit exceeded
16 Execution timed out 1083 ms 4576 KB Time limit exceeded
17 Execution timed out 1054 ms 4576 KB Time limit exceeded
18 Execution timed out 1076 ms 4576 KB Time limit exceeded
19 Execution timed out 1002 ms 4576 KB Time limit exceeded
20 Execution timed out 1090 ms 4576 KB Time limit exceeded
21 Execution timed out 1052 ms 4576 KB Time limit exceeded
22 Execution timed out 1054 ms 4576 KB Time limit exceeded
23 Execution timed out 1037 ms 4576 KB Time limit exceeded
24 Execution timed out 1072 ms 4576 KB Time limit exceeded
25 Execution timed out 1090 ms 4576 KB Time limit exceeded
26 Execution timed out 1080 ms 4576 KB Time limit exceeded
27 Execution timed out 1089 ms 4576 KB Time limit exceeded
28 Execution timed out 1082 ms 4576 KB Time limit exceeded
29 Execution timed out 1058 ms 4576 KB Time limit exceeded
30 Execution timed out 1068 ms 4576 KB Time limit exceeded
31 Execution timed out 1048 ms 4576 KB Time limit exceeded
32 Execution timed out 1079 ms 4576 KB Time limit exceeded
33 Execution timed out 1086 ms 4576 KB Time limit exceeded
34 Execution timed out 1057 ms 5000 KB Time limit exceeded
35 Execution timed out 1082 ms 8328 KB Time limit exceeded
36 Execution timed out 1070 ms 8328 KB Time limit exceeded
37 Execution timed out 1071 ms 8328 KB Time limit exceeded
38 Execution timed out 1063 ms 8328 KB Time limit exceeded
39 Execution timed out 1069 ms 8328 KB Time limit exceeded
40 Execution timed out 1082 ms 8328 KB Time limit exceeded
41 Execution timed out 1072 ms 8328 KB Time limit exceeded
42 Execution timed out 1087 ms 8328 KB Time limit exceeded
43 Execution timed out 1085 ms 8328 KB Time limit exceeded
44 Execution timed out 1075 ms 8328 KB Time limit exceeded
45 Execution timed out 1078 ms 8328 KB Time limit exceeded
46 Execution timed out 1069 ms 8328 KB Time limit exceeded
47 Execution timed out 1082 ms 8328 KB Time limit exceeded
48 Execution timed out 1061 ms 8328 KB Time limit exceeded
49 Execution timed out 1064 ms 8840 KB Time limit exceeded
50 Execution timed out 1068 ms 8840 KB Time limit exceeded
51 Execution timed out 1073 ms 8840 KB Time limit exceeded
52 Execution timed out 1085 ms 10888 KB Time limit exceeded
53 Execution timed out 1093 ms 10888 KB Time limit exceeded
54 Execution timed out 1063 ms 10888 KB Time limit exceeded
55 Execution timed out 1075 ms 10888 KB Time limit exceeded
56 Execution timed out 1078 ms 27016 KB Time limit exceeded
57 Execution timed out 1083 ms 27016 KB Time limit exceeded
58 Execution timed out 1077 ms 27016 KB Time limit exceeded
59 Execution timed out 1085 ms 27016 KB Time limit exceeded
60 Execution timed out 1077 ms 27016 KB Time limit exceeded
61 Execution timed out 1067 ms 27016 KB Time limit exceeded
62 Execution timed out 1063 ms 27016 KB Time limit exceeded
63 Execution timed out 1081 ms 27016 KB Time limit exceeded
64 Execution timed out 1088 ms 27016 KB Time limit exceeded
65 Execution timed out 1078 ms 27016 KB Time limit exceeded
66 Execution timed out 1073 ms 27016 KB Time limit exceeded
67 Execution timed out 1081 ms 27016 KB Time limit exceeded
68 Execution timed out 1084 ms 27016 KB Time limit exceeded
69 Execution timed out 1073 ms 27016 KB Time limit exceeded
70 Execution timed out 1079 ms 27016 KB Time limit exceeded
71 Execution timed out 1045 ms 27016 KB Time limit exceeded
72 Execution timed out 1043 ms 27016 KB Time limit exceeded
73 Execution timed out 1066 ms 27016 KB Time limit exceeded
74 Execution timed out 1078 ms 27016 KB Time limit exceeded
75 Execution timed out 1078 ms 27016 KB Time limit exceeded
76 Execution timed out 1075 ms 27016 KB Time limit exceeded
77 Execution timed out 1090 ms 27016 KB Time limit exceeded
78 Execution timed out 1081 ms 27016 KB Time limit exceeded
79 Execution timed out 1086 ms 27016 KB Time limit exceeded
80 Execution timed out 1083 ms 27016 KB Time limit exceeded
81 Execution timed out 1071 ms 27016 KB Time limit exceeded
82 Execution timed out 1077 ms 27016 KB Time limit exceeded
83 Execution timed out 1088 ms 27016 KB Time limit exceeded
84 Execution timed out 1074 ms 27016 KB Time limit exceeded
85 Execution timed out 1084 ms 27016 KB Time limit exceeded
86 Execution timed out 1085 ms 27016 KB Time limit exceeded
87 Execution timed out 1080 ms 27016 KB Time limit exceeded
88 Execution timed out 1075 ms 27016 KB Time limit exceeded
89 Execution timed out 1081 ms 27016 KB Time limit exceeded
90 Execution timed out 1081 ms 27016 KB Time limit exceeded
91 Execution timed out 1054 ms 27016 KB Time limit exceeded
92 Execution timed out 1083 ms 27016 KB Time limit exceeded