#pragma GCC optimize("O1,O2,O3,Ofast,unroll-loops")
#include <bits/stdc++.h>
#include <string>
#include <iostream>
#include <cmath>
#include <numeric>
#include <stack>
#include <queue>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef pair<ld, ld> pd;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<vector<int>> vvi;
typedef vector<vector<pi>> vvpi;
typedef vector<ld> vd;
typedef vector<long long> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
#define FOR(i, a, b) for (int i = a; i < (b); i++)
#define F0R(i, a) for (int i = 0; i < (a); i++)
#define FORd(i, a, b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i, a) for (int i = (a)-1; i >= 0; i--)
#define trav(a, x) for (auto &a : x)
#define uid(a, b) uniform_int_distribution<int>(a, b)(rng)
#define len(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define F first
#define nl endl
#define S second
#define lb lower_bound
#define ub upper_bound
#define aint(x) x.begin(), x.end()
#define raint(x) x.rbegin(), x.rend()
#define ins insert
const int M = 1e9+7;
void init(string name)
{
freopen((name + ".in").c_str(), "r", stdin);
freopen((name + ".out").c_str(), "w", stdout);
}
void fastIO()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
}
int r,c,m;
vi arr;
// vpi moves = {{-1,0},{0,1},{1,0},{0,-1}};
vpi moves = {{1,0},{0,-1},{-1,0},{0,1}};
vvi maps(505,vi(505,1));
int history[505][505][5002];
int dfs(pi pos,int cnt){
if(maps[pos.F][pos.S] == 1){
return -1;
}
// cerr << pos.F << "," << pos.S << " " << cnt << endl;
if(cnt == m){
history[pos.F][pos.S][cnt] = 1;
return 1;
}
if(history[pos.F][pos.S][cnt] != 0)return history[pos.F][pos.S][cnt];
int val = -1;
if(arr[cnt] == -1){
FOR(i,0,4){
val = max(val,dfs({pos.F+moves[i].F,pos.S+moves[i].S},cnt+1));
if(val == 1)break;
}
}else{
val = dfs({pos.F+moves[arr[cnt]].F,pos.S+moves[arr[cnt]].S},cnt+1);
}
history[pos.F][pos.S][cnt] = val;
return val;
}
void solve()
{
cin >> r >> c >> m;
FOR(i,1,r+1){
FOR(j,1,c+1){
char a;cin >> a;
if(a == '.'){
maps[i][j] = 0;
}else{
maps[i][j] = 1;
}
FOR(k,0,m)history[i][j][k] = 0;
}
}
FOR(i,0,m){
char a;cin >> a;
if(a == 'N')arr.pb(0);
else if(a == 'E')arr.pb(1);
else if(a == 'S')arr.pb(2);
else if(a == 'W')arr.pb(3);
else arr.pb(-1);
}
// FOR(i,1,r+1){
// FOR(j,1,c+1){
// cerr<<maps[i][j];
// }cerr << endl;
// }
reverse(arr.begin(),arr.end());
// for(int i:arr)cerr << i << " ";
// cerr << endl;
int ans = 0;
FOR(i,1,r+1){
FOR(j,1,c+1){
// if(i != 2 || j != 4)continue;
if(maps[i][j] == 0){
ans += max(dfs({i,j},0),0);
}
}
}
cout << ans << endl;
}
int main()
{
fastIO();
// init("test");
int t = 1;
// cin >> t;
while (t--)
solve();
return 0;
}
Compilation message
nautilus.cpp: In function 'void init(std::string)':
nautilus.cpp:44:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
44 | freopen((name + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nautilus.cpp:45:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
45 | freopen((name + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/ccwC2r7f.o: in function `fastIO()':
nautilus.cpp:(.text+0x2e2): relocation truncated to fit: R_X86_64_PC32 against symbol `std::cin' defined in .bss._ZSt3cin section in /usr/lib/gcc/x86_64-linux-gnu/10/libstdc++.a(globals_io.o)
/tmp/ccwC2r7f.o: in function `dfs(std::pair<int, int>, int)':
nautilus.cpp:(.text+0x313): relocation truncated to fit: R_X86_64_PC32 against symbol `maps' defined in .bss section in /tmp/ccwC2r7f.o
nautilus.cpp:(.text+0x32a): relocation truncated to fit: R_X86_64_PC32 against symbol `m' defined in .bss section in /tmp/ccwC2r7f.o
nautilus.cpp:(.text+0x366): relocation truncated to fit: R_X86_64_PC32 against symbol `arr' defined in .bss section in /tmp/ccwC2r7f.o
nautilus.cpp:(.text+0x371): relocation truncated to fit: R_X86_64_PC32 against symbol `moves' defined in .bss section in /tmp/ccwC2r7f.o
nautilus.cpp:(.text+0x3d5): relocation truncated to fit: R_X86_64_PC32 against symbol `moves' defined in .bss section in /tmp/ccwC2r7f.o
/tmp/ccwC2r7f.o: in function `solve()':
nautilus.cpp:(.text+0x479): relocation truncated to fit: R_X86_64_PC32 against symbol `r' defined in .bss section in /tmp/ccwC2r7f.o
nautilus.cpp:(.text+0x480): relocation truncated to fit: R_X86_64_PC32 against symbol `std::cin' defined in .bss._ZSt3cin section in /usr/lib/gcc/x86_64-linux-gnu/10/libstdc++.a(globals_io.o)
nautilus.cpp:(.text+0x4a8): relocation truncated to fit: R_X86_64_PC32 against symbol `c' defined in .bss section in /tmp/ccwC2r7f.o
nautilus.cpp:(.text+0x4b7): relocation truncated to fit: R_X86_64_PC32 against symbol `m' defined in .bss section in /tmp/ccwC2r7f.o
nautilus.cpp:(.text+0x4c5): additional relocation overflows omitted from the output
/usr/bin/ld: failed to convert GOTPCREL relocation; relink with --no-relax
collect2: error: ld returned 1 exit status
