답안 #53609 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
53609	2018-06-30T12:44:01 Z	Diuven	Mecho (IOI09_mecho)	C++11	14 / 100	269 ms	6620 KB

mecho

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
const int MX=810, inf=2e9;

int n, s;
char B[MX][MX];
int xs, ys, xl, yl;
int dx[4]={0,1,0,-1};
int dy[4]={1,0,-1,0};
int Y[MX][MX];

bool valid(int x, int y){
    return 1<=x && x<=n && 1<=y && y<=n && (B[x][y]=='G' || B[x][y]=='H');
}

void bees(){
    queue<pii> Q;
    for(int i=1; i<=n; i++)
        for(int j=1; j<=n; j++){
            if(B[i][j]=='H') Y[i][j]=0, Q.push({i,j});
            else Y[i][j]=-1;
        }
    while(!Q.empty()){
        pii p=Q.front(); Q.pop();
        int x,y; tie(x,y)=p;
        for(int k=0; k<4; k++){
            int u=x+dx[k], v=y+dy[k];
            if(!valid(u,v) || Y[u][v]>=0) continue;
            Y[u][v]=Y[x][y]+s;
            Q.push({u,v});
        }
    }
}

int D[MX][MX];

bool solve(int t){
    for(int i=1; i<=n; i++)
        for(int j=1; j<=n; j++)
            D[i][j]=-1;
    queue<pii> Q;
    D[xs][ys]=t*s;
    if(D[xs][ys]>=Y[xs][ys]) return false;
    Q.push({xs,ys});
    while(!Q.empty()){
        int x,y; tie(x,y)=Q.front(); Q.pop();
        for(int k=0; k<4; k++){
            int u=x+dx[k], v=y+dy[k];
            if(B[u][v]=='D') return true;
            if(!valid(u,v) || D[u][v]>=0) continue;
            int now=t*s+D[x][y]+1;
            if(Y[u][v]>=0 && now>=Y[u][v]) continue;
            D[u][v]=D[x][y]+1;
            Q.push({u,v});
        }
    }
    return false;
}


int main(){
    ios::sync_with_stdio(0); cin.tie(0);
    cin>>n>>s;
    for(int i=1; i<=n; i++)
        for(int j=1; j<=n; j++){
            cin>>B[i][j];
            if(B[i][j]=='M') xs=i, ys=j, B[i][j]='G';
            if(B[i][j]=='D') xl=i, yl=j;
        }
    bees();
    int s=0, e=n*n;
    while(s<e){
        int m=(s+e+1)/2;
        if(solve(m)) s=m;
        else e=m-1;
    }
    cout<<(solve(s) ? s : -1);
    return 0;
}

Subtask #1
14.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	3 ms	380 KB	Output isn't correct
2	Incorrect	2 ms	380 KB	Output isn't correct
3	Incorrect	2 ms	432 KB	Output isn't correct
4	Incorrect	2 ms	480 KB	Output isn't correct
5	Correct	2 ms	612 KB	Output is correct
6	Incorrect	3 ms	612 KB	Output isn't correct
7	Incorrect	157 ms	6460 KB	Output isn't correct
8	Correct	2 ms	6460 KB	Output is correct
9	Incorrect	3 ms	6460 KB	Output isn't correct
10	Incorrect	2 ms	6460 KB	Output isn't correct
11	Incorrect	2 ms	6460 KB	Output isn't correct
12	Correct	3 ms	6460 KB	Output is correct
13	Correct	3 ms	6460 KB	Output is correct
14	Correct	3 ms	6460 KB	Output is correct
15	Incorrect	2 ms	6460 KB	Output isn't correct
16	Incorrect	3 ms	6460 KB	Output isn't correct
17	Incorrect	2 ms	6460 KB	Output isn't correct
18	Incorrect	3 ms	6460 KB	Output isn't correct
19	Incorrect	3 ms	6460 KB	Output isn't correct
20	Incorrect	3 ms	6460 KB	Output isn't correct
21	Incorrect	4 ms	6460 KB	Output isn't correct
22	Incorrect	2 ms	6460 KB	Output isn't correct
23	Incorrect	3 ms	6460 KB	Output isn't correct
24	Incorrect	3 ms	6460 KB	Output isn't correct
25	Incorrect	3 ms	6460 KB	Output isn't correct
26	Incorrect	3 ms	6460 KB	Output isn't correct
27	Incorrect	3 ms	6460 KB	Output isn't correct
28	Incorrect	2 ms	6460 KB	Output isn't correct
29	Incorrect	3 ms	6460 KB	Output isn't correct
30	Incorrect	3 ms	6460 KB	Output isn't correct
31	Incorrect	3 ms	6460 KB	Output isn't correct
32	Incorrect	2 ms	6460 KB	Output isn't correct
33	Incorrect	10 ms	6460 KB	Output isn't correct
34	Incorrect	8 ms	6460 KB	Output isn't correct
35	Incorrect	28 ms	6460 KB	Output isn't correct
36	Incorrect	10 ms	6460 KB	Output isn't correct
37	Incorrect	10 ms	6460 KB	Output isn't correct
38	Incorrect	34 ms	6460 KB	Output isn't correct
39	Incorrect	12 ms	6460 KB	Output isn't correct
40	Incorrect	12 ms	6460 KB	Output isn't correct
41	Incorrect	46 ms	6460 KB	Output isn't correct
42	Incorrect	21 ms	6460 KB	Output isn't correct
43	Incorrect	14 ms	6460 KB	Output isn't correct
44	Incorrect	71 ms	6460 KB	Output isn't correct
45	Incorrect	18 ms	6460 KB	Output isn't correct
46	Incorrect	17 ms	6460 KB	Output isn't correct
47	Incorrect	76 ms	6460 KB	Output isn't correct
48	Incorrect	21 ms	6460 KB	Output isn't correct
49	Incorrect	21 ms	6460 KB	Output isn't correct
50	Incorrect	110 ms	6460 KB	Output isn't correct
51	Incorrect	23 ms	6460 KB	Output isn't correct
52	Incorrect	23 ms	6460 KB	Output isn't correct
53	Incorrect	118 ms	6460 KB	Output isn't correct
54	Incorrect	26 ms	6460 KB	Output isn't correct
55	Incorrect	25 ms	6460 KB	Output isn't correct
56	Incorrect	139 ms	6460 KB	Output isn't correct
57	Incorrect	33 ms	6460 KB	Output isn't correct
58	Incorrect	35 ms	6460 KB	Output isn't correct
59	Incorrect	181 ms	6460 KB	Output isn't correct
60	Incorrect	35 ms	6460 KB	Output isn't correct
61	Incorrect	32 ms	6460 KB	Output isn't correct
62	Incorrect	198 ms	6460 KB	Output isn't correct
63	Correct	135 ms	6460 KB	Output is correct
64	Incorrect	269 ms	6460 KB	Output isn't correct
65	Incorrect	194 ms	6468 KB	Output isn't correct
66	Incorrect	162 ms	6468 KB	Output isn't correct
67	Correct	162 ms	6468 KB	Output is correct
68	Correct	76 ms	6468 KB	Output is correct
69	Incorrect	86 ms	6468 KB	Output isn't correct
70	Incorrect	62 ms	6468 KB	Output isn't correct
71	Incorrect	58 ms	6468 KB	Output isn't correct
72	Incorrect	47 ms	6520 KB	Output isn't correct
73	Correct	66 ms	6520 KB	Output is correct
74	Incorrect	97 ms	6520 KB	Output isn't correct
75	Incorrect	108 ms	6520 KB	Output isn't correct
76	Incorrect	97 ms	6520 KB	Output isn't correct
77	Incorrect	114 ms	6520 KB	Output isn't correct
78	Correct	122 ms	6520 KB	Output is correct
79	Incorrect	73 ms	6520 KB	Output isn't correct
80	Incorrect	87 ms	6520 KB	Output isn't correct
81	Incorrect	136 ms	6520 KB	Output isn't correct
82	Incorrect	103 ms	6520 KB	Output isn't correct
83	Correct	109 ms	6520 KB	Output is correct
84	Incorrect	99 ms	6520 KB	Output isn't correct
85	Incorrect	112 ms	6572 KB	Output isn't correct
86	Incorrect	116 ms	6572 KB	Output isn't correct
87	Incorrect	109 ms	6572 KB	Output isn't correct
88	Correct	158 ms	6620 KB	Output is correct
89	Incorrect	184 ms	6620 KB	Output isn't correct
90	Incorrect	169 ms	6620 KB	Output isn't correct
91	Incorrect	160 ms	6620 KB	Output isn't correct
92	Incorrect	132 ms	6620 KB	Output isn't correct

답안 #53609

Compilation message

Subtask #1 14.0 / 100.0

Subtask #1
14.0 / 100.0