| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 126531 |
2019-07-08T03:23:17 Z |
khulegub |
Mecho (IOI09_mecho) |
C++14 |
|
1000 ms |
1144 KB |
#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define xx first
#define yy second
using namespace std;
typedef long long i64;
typedef pair<int,int> pii;
int n;
int s;
char gazar[810][810];
bool vis[810][810];
int beed[810][810];
int mei, mej;
bool feasible (int x){
memset(vis, 0, sizeof vis);
queue<pii> q;
int depth = x * s;
q.push(mp(mei, mej));
vis[mei][mej] = 1;
while(!q.empty()){
int sz = q.size();
for (int cnt = 0; cnt < sz; cnt++){
pii nw = q.front();
if (gazar[nw.xx][nw.yy] == 'D') return 1;
q.pop();
if (nw.xx < n && !vis[nw.xx + 1][nw.yy] && (gazar[nw.xx + 1][nw.yy] == 'D' || (gazar[nw.xx + 1][nw.yy] == 'G' && ((depth+1) / s) < beed[nw.xx + 1][nw.yy]) ) ) q.push(mp(nw.xx + 1, nw.yy)), vis[nw.xx + 1][nw.yy] = 1;
if (nw.xx > 1 && !vis[nw.xx - 1][nw.yy] && (gazar[nw.xx - 1][nw.yy] == 'D' || (gazar[nw.xx - 1][nw.yy] == 'G' && ((depth+1) / s) < beed[nw.xx - 1][nw.yy]) ) ) q.push(mp(nw.xx - 1, nw.yy)), vis[nw.xx - 1][nw.yy] = 1;
if (nw.yy < n && !vis[nw.xx][nw.yy + 1] && (gazar[nw.xx][nw.yy + 1] == 'D' || (gazar[nw.xx][nw.yy + 1] == 'G' && ((depth+1) / s) < beed[nw.xx][nw.yy + 1]) ) ) q.push(mp(nw.xx, nw.yy + 1)), vis[nw.xx][nw.yy + 1] = 1;
if (nw.yy > 1 && !vis[nw.xx][nw.yy - 1] && (gazar[nw.xx][nw.yy - 1] == 'D' || (gazar[nw.xx][nw.yy - 1] == 'G' && ((depth+1) / s) < beed[nw.xx][nw.yy - 1]) ) ) q.push(mp(nw.xx, nw.yy - 1)), vis[nw.xx][nw.yy - 1] = 1;
}
depth ++;
}
return 0;
}
int main (){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
freopen("in.txt", "r", stdin);
cin >> n;
cin >> s;
for (int i = 1; i <= n; i++){
string tmp;
cin >> tmp;
// cout << tmp;
for (int j = 1; j <= n; j++){
gazar[i][j] = tmp[j - 1];
if (tmp[j - 1] == 'M') mei = i, mej = j;
}
}
queue<pii> q;
for (int i = 1; i <= n; i++){
for (int j = 1; j <= n; j++){
if (gazar[i][j] == 'H') q.push( mp(i, j) ), vis[i][j] = 1;
}
}
int depth = 0;
// cout << "QQQ";
while (!q.empty()){
int sz = q.size();
// cout << sz << ' ';
for (int cnt = 0; cnt < sz; cnt++){
pii nw = q.front();
q.pop();
beed[nw.xx][nw.yy] = depth;
if (nw.xx < n && !vis[nw.xx + 1][nw.yy] && (gazar[nw.xx + 1][nw.yy] == 'M' || gazar[nw.xx + 1][nw.yy] == 'G') ) q.push(mp(nw.xx + 1, nw.yy)), vis[nw.xx + 1][nw.yy] = 1;
if (nw.xx > 1 && !vis[nw.xx - 1][nw.yy] && (gazar[nw.xx - 1][nw.yy] == 'M' || gazar[nw.xx - 1][nw.yy] == 'G') ) q.push(mp(nw.xx - 1, nw.yy)), vis[nw.xx - 1][nw.yy] = 1;
if (nw.yy < n && !vis[nw.xx][nw.yy + 1] && (gazar[nw.xx][nw.yy + 1] == 'M' || gazar[nw.xx][nw.yy + 1] == 'G') ) q.push(mp(nw.xx, nw.yy + 1)), vis[nw.xx][nw.yy + 1] = 1;
if (nw.yy > 1 && !vis[nw.xx][nw.yy - 1] && (gazar[nw.xx][nw.yy - 1] == 'M' || gazar[nw.xx][nw.yy - 1] == 'G') ) q.push(mp(nw.xx, nw.yy - 1)), vis[nw.xx][nw.yy - 1] = 1;
}
depth++;
}
int lo = 0, hi = beed[mei][mej] - 1;
while (lo != hi){
int mid = (lo + hi + 1) >> 1;
if (feasible(mid)) lo = mid;
else hi = mid - 1;
}
if(feasible(lo)) cout << lo;
else cout << -1;
return 0;
}
Compilation message
mecho.cpp: In function 'int main()':
mecho.cpp:38:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
freopen("in.txt", "r", stdin);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1082 ms |
1016 KB |
Time limit exceeded |
| 2 |
Execution timed out |
1084 ms |
1016 KB |
Time limit exceeded |
| 3 |
Execution timed out |
1085 ms |
1016 KB |
Time limit exceeded |
| 4 |
Execution timed out |
1086 ms |
1016 KB |
Time limit exceeded |
| 5 |
Execution timed out |
1080 ms |
1016 KB |
Time limit exceeded |
| 6 |
Execution timed out |
1089 ms |
1016 KB |
Time limit exceeded |
| 7 |
Execution timed out |
1079 ms |
1016 KB |
Time limit exceeded |
| 8 |
Execution timed out |
1089 ms |
1016 KB |
Time limit exceeded |
| 9 |
Execution timed out |
1076 ms |
1016 KB |
Time limit exceeded |
| 10 |
Execution timed out |
1086 ms |
1016 KB |
Time limit exceeded |
| 11 |
Execution timed out |
1088 ms |
1020 KB |
Time limit exceeded |
| 12 |
Execution timed out |
1068 ms |
1016 KB |
Time limit exceeded |
| 13 |
Execution timed out |
1085 ms |
1016 KB |
Time limit exceeded |
| 14 |
Execution timed out |
1077 ms |
1016 KB |
Time limit exceeded |
| 15 |
Execution timed out |
1081 ms |
1016 KB |
Time limit exceeded |
| 16 |
Execution timed out |
1092 ms |
1016 KB |
Time limit exceeded |
| 17 |
Execution timed out |
1080 ms |
1016 KB |
Time limit exceeded |
| 18 |
Execution timed out |
1079 ms |
1016 KB |
Time limit exceeded |
| 19 |
Execution timed out |
1082 ms |
1016 KB |
Time limit exceeded |
| 20 |
Execution timed out |
1087 ms |
1016 KB |
Time limit exceeded |
| 21 |
Execution timed out |
1093 ms |
1016 KB |
Time limit exceeded |
| 22 |
Execution timed out |
1087 ms |
1016 KB |
Time limit exceeded |
| 23 |
Execution timed out |
1087 ms |
1020 KB |
Time limit exceeded |
| 24 |
Execution timed out |
1087 ms |
1016 KB |
Time limit exceeded |
| 25 |
Execution timed out |
1087 ms |
1016 KB |
Time limit exceeded |
| 26 |
Execution timed out |
1076 ms |
1016 KB |
Time limit exceeded |
| 27 |
Execution timed out |
1074 ms |
1016 KB |
Time limit exceeded |
| 28 |
Execution timed out |
1076 ms |
1016 KB |
Time limit exceeded |
| 29 |
Execution timed out |
1079 ms |
1016 KB |
Time limit exceeded |
| 30 |
Execution timed out |
1078 ms |
1016 KB |
Time limit exceeded |
| 31 |
Execution timed out |
1076 ms |
1016 KB |
Time limit exceeded |
| 32 |
Execution timed out |
1079 ms |
1016 KB |
Time limit exceeded |
| 33 |
Execution timed out |
1075 ms |
1016 KB |
Time limit exceeded |
| 34 |
Execution timed out |
1076 ms |
1016 KB |
Time limit exceeded |
| 35 |
Execution timed out |
1079 ms |
988 KB |
Time limit exceeded |
| 36 |
Execution timed out |
1080 ms |
1016 KB |
Time limit exceeded |
| 37 |
Execution timed out |
1085 ms |
1016 KB |
Time limit exceeded |
| 38 |
Execution timed out |
1080 ms |
1016 KB |
Time limit exceeded |
| 39 |
Execution timed out |
1075 ms |
1016 KB |
Time limit exceeded |
| 40 |
Execution timed out |
1076 ms |
1016 KB |
Time limit exceeded |
| 41 |
Execution timed out |
1087 ms |
1016 KB |
Time limit exceeded |
| 42 |
Execution timed out |
1077 ms |
1016 KB |
Time limit exceeded |
| 43 |
Execution timed out |
1072 ms |
1016 KB |
Time limit exceeded |
| 44 |
Execution timed out |
1081 ms |
1016 KB |
Time limit exceeded |
| 45 |
Execution timed out |
1065 ms |
1016 KB |
Time limit exceeded |
| 46 |
Execution timed out |
1080 ms |
1016 KB |
Time limit exceeded |
| 47 |
Execution timed out |
1074 ms |
1016 KB |
Time limit exceeded |
| 48 |
Execution timed out |
1083 ms |
1020 KB |
Time limit exceeded |
| 49 |
Execution timed out |
1081 ms |
1016 KB |
Time limit exceeded |
| 50 |
Execution timed out |
1084 ms |
1016 KB |
Time limit exceeded |
| 51 |
Execution timed out |
1090 ms |
1016 KB |
Time limit exceeded |
| 52 |
Execution timed out |
1083 ms |
1016 KB |
Time limit exceeded |
| 53 |
Execution timed out |
1080 ms |
1016 KB |
Time limit exceeded |
| 54 |
Execution timed out |
1090 ms |
1016 KB |
Time limit exceeded |
| 55 |
Execution timed out |
1087 ms |
1016 KB |
Time limit exceeded |
| 56 |
Execution timed out |
1089 ms |
1016 KB |
Time limit exceeded |
| 57 |
Execution timed out |
1085 ms |
1016 KB |
Time limit exceeded |
| 58 |
Execution timed out |
1081 ms |
1016 KB |
Time limit exceeded |
| 59 |
Execution timed out |
1076 ms |
1016 KB |
Time limit exceeded |
| 60 |
Execution timed out |
1072 ms |
1020 KB |
Time limit exceeded |
| 61 |
Execution timed out |
1082 ms |
1016 KB |
Time limit exceeded |
| 62 |
Execution timed out |
1078 ms |
1020 KB |
Time limit exceeded |
| 63 |
Execution timed out |
1077 ms |
1016 KB |
Time limit exceeded |
| 64 |
Execution timed out |
1075 ms |
1016 KB |
Time limit exceeded |
| 65 |
Execution timed out |
1087 ms |
1016 KB |
Time limit exceeded |
| 66 |
Execution timed out |
1082 ms |
1016 KB |
Time limit exceeded |
| 67 |
Execution timed out |
1081 ms |
1016 KB |
Time limit exceeded |
| 68 |
Execution timed out |
1080 ms |
1016 KB |
Time limit exceeded |
| 69 |
Execution timed out |
1069 ms |
1016 KB |
Time limit exceeded |
| 70 |
Execution timed out |
1079 ms |
1016 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1091 ms |
1016 KB |
Time limit exceeded |
| 72 |
Execution timed out |
1090 ms |
1016 KB |
Time limit exceeded |
| 73 |
Execution timed out |
1085 ms |
1016 KB |
Time limit exceeded |
| 74 |
Execution timed out |
1070 ms |
1016 KB |
Time limit exceeded |
| 75 |
Execution timed out |
1073 ms |
1016 KB |
Time limit exceeded |
| 76 |
Execution timed out |
1089 ms |
1016 KB |
Time limit exceeded |
| 77 |
Execution timed out |
1079 ms |
1016 KB |
Time limit exceeded |
| 78 |
Execution timed out |
1071 ms |
1144 KB |
Time limit exceeded |
| 79 |
Execution timed out |
1080 ms |
1016 KB |
Time limit exceeded |
| 80 |
Execution timed out |
1081 ms |
1016 KB |
Time limit exceeded |
| 81 |
Execution timed out |
1080 ms |
1020 KB |
Time limit exceeded |
| 82 |
Execution timed out |
1069 ms |
1016 KB |
Time limit exceeded |
| 83 |
Execution timed out |
1076 ms |
1016 KB |
Time limit exceeded |
| 84 |
Execution timed out |
1072 ms |
1008 KB |
Time limit exceeded |
| 85 |
Execution timed out |
1077 ms |
1016 KB |
Time limit exceeded |
| 86 |
Execution timed out |
1080 ms |
1016 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1084 ms |
1016 KB |
Time limit exceeded |
| 88 |
Execution timed out |
1074 ms |
1016 KB |
Time limit exceeded |
| 89 |
Execution timed out |
1072 ms |
1016 KB |
Time limit exceeded |
| 90 |
Execution timed out |
1081 ms |
1016 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1084 ms |
1016 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1085 ms |
1016 KB |
Time limit exceeded |
