#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include<bits/stdc++.h>
#define space <<' '<<
#define endl '\n'
#define inf 1e14
#define F first
#define S second
#define PB push_back
#define PF push_front
#define md(a) ((a+mod)%mod)
#define MP(a,b) make_pair(a,b)
#define MT(a,b,c) make_tuple(a,b,c)
typedef long long ll;
using namespace std;
template<typename t> using heap=
priority_queue<t,vector<t>,greater<t>>;
const int mx = 4005;
int h,w;
bool seen[mx][mx];
char state[mx][mx];
deque<pair<int,int>> l[2];
pair<int,int> nei[]={MP(0,1),MP(0,-1),MP(1,0),MP(-1,0)};
bool c(int i,int j){
return (i<0||h<=i||j<0||w<=j);
}
int main(){
std::ios::sync_with_stdio(0);
cin.tie(0);cout.tie(0);
cin>>h>>w;
for(int i=0;i<h;i++)
for(int j=0;j<w;j++)
cin>>state[i][j];
int pc=0,cnt=0;
char cc=state[h-1][w-1];
l[pc].PB(MP(h-1,w-1));
if(cc=='.'){
cout<<0;
return 0;
}
while(!l[pc].empty()){
pair<int,int> r,d=l[pc].back();
seen[d.F][d.S]=1;
l[pc].pop_back();
for(int i=0;i<4;i++){
r=MP(d.F+nei[i].F,d.S+nei[i].S);
if(!c(r.F,r.S))
if (state[r.F][r.S]!='.'&&!seen[r.F][r.S]){
if(state[r.F][r.S]==cc)
l[pc].push_front(MP(r.F,r.S));
else
l[!pc].push_front(MP(r.F,r.S));
}
}
if(l[pc].empty()){
pc=!pc;cnt++;
cc=((cc=='F')?'R':'F');
}
}
cout<<cnt;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
1676 ms |
1048576 KB |
Execution killed with signal 9 |
2 |
Correct |
1 ms |
2392 KB |
Output is correct |
3 |
Correct |
1145 ms |
79276 KB |
Output is correct |
4 |
Execution timed out |
2068 ms |
934564 KB |
Time limit exceeded |
5 |
Execution timed out |
2061 ms |
590724 KB |
Time limit exceeded |
6 |
Correct |
1 ms |
2392 KB |
Output is correct |
7 |
Correct |
1103 ms |
78508 KB |
Output is correct |
8 |
Execution timed out |
2108 ms |
940800 KB |
Time limit exceeded |
9 |
Correct |
5 ms |
4696 KB |
Output is correct |
10 |
Runtime error |
1931 ms |
1048576 KB |
Execution killed with signal 9 |
11 |
Execution timed out |
2101 ms |
933672 KB |
Time limit exceeded |
12 |
Runtime error |
1770 ms |
1048576 KB |
Execution killed with signal 9 |
13 |
Execution timed out |
2060 ms |
554760 KB |
Time limit exceeded |
14 |
Execution timed out |
2081 ms |
558492 KB |
Time limit exceeded |
15 |
Runtime error |
1746 ms |
1048576 KB |
Execution killed with signal 9 |
16 |
Runtime error |
1635 ms |
1048576 KB |
Execution killed with signal 9 |
17 |
Execution timed out |
2095 ms |
1039244 KB |
Time limit exceeded |
18 |
Execution timed out |
2072 ms |
904868 KB |
Time limit exceeded |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
11 ms |
30300 KB |
Output is correct |
2 |
Execution timed out |
2140 ms |
960384 KB |
Time limit exceeded |
3 |
Execution timed out |
2079 ms |
393952 KB |
Time limit exceeded |
4 |
Execution timed out |
2088 ms |
355372 KB |
Time limit exceeded |
5 |
Correct |
136 ms |
32848 KB |
Output is correct |
6 |
Runtime error |
1735 ms |
1048576 KB |
Execution killed with signal 9 |
7 |
Correct |
10 ms |
31832 KB |
Output is correct |
8 |
Correct |
10 ms |
30296 KB |
Output is correct |
9 |
Execution timed out |
2037 ms |
446212 KB |
Time limit exceeded |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
12 ms |
31068 KB |
Output is correct |
12 |
Correct |
1 ms |
4768 KB |
Output is correct |
13 |
Execution timed out |
2136 ms |
1043804 KB |
Time limit exceeded |
14 |
Execution timed out |
2086 ms |
576972 KB |
Time limit exceeded |
15 |
Correct |
15 ms |
9608 KB |
Output is correct |
16 |
Execution timed out |
2086 ms |
616180 KB |
Time limit exceeded |
17 |
Execution timed out |
2047 ms |
469576 KB |
Time limit exceeded |
18 |
Correct |
58 ms |
19796 KB |
Output is correct |
19 |
Execution timed out |
2092 ms |
354564 KB |
Time limit exceeded |
20 |
Execution timed out |
2068 ms |
274444 KB |
Time limit exceeded |
21 |
Execution timed out |
2073 ms |
262120 KB |
Time limit exceeded |
22 |
Correct |
132 ms |
32592 KB |
Output is correct |
23 |
Execution timed out |
2068 ms |
546196 KB |
Time limit exceeded |
24 |
Correct |
124 ms |
33616 KB |
Output is correct |
25 |
Correct |
210 ms |
47332 KB |
Output is correct |
26 |
Execution timed out |
2071 ms |
883560 KB |
Time limit exceeded |
27 |
Execution timed out |
2092 ms |
790444 KB |
Time limit exceeded |
28 |
Runtime error |
1832 ms |
1048576 KB |
Execution killed with signal 9 |
29 |
Execution timed out |
2093 ms |
857536 KB |
Time limit exceeded |
30 |
Execution timed out |
2087 ms |
896368 KB |
Time limit exceeded |
31 |
Runtime error |
1965 ms |
1048576 KB |
Execution killed with signal 9 |
32 |
Execution timed out |
2055 ms |
718624 KB |
Time limit exceeded |