#include "rainbow.h"
#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define F first
//#define S second
#define coy cout<<"YES\n"
#define con cout<<"NO\n"
#define co1 cout<<"-1\n"
#define sc(x) scanf("%lld",&x)
#define all(x) x.begin(),x.end()
#define fast ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
using namespace std;
const int SI=3e5+7;
ll INF=8e18+7;
int dx[] = {1 , -1 , 0 , 0};
int dy[] = {0 , 0 , 1 , -1};
int MOD=1e9+7;
ll n,m,g[55][55];
ll vis[55][55],col;
ll u,l,d,r;
bool valid(int x,int y)
{
return x>=u&&x<=d&&y>=l&&y<=r&&g[x][y]==0&&vis[x][y]!=col;
}
void dfs(int x,int y)
{
// cout <<x<<" "<<y<<"\n";
vis[x][y]=col;
for (int i=0;i<4;i++)
{
if (valid(x+dx[i],y+dy[i]))
dfs(x+dx[i],y+dy[i]);
}
}
void init(int R, int C, int sr, int sc, int M, char *S) {
n=R,m=C;
g[sr][sc]=1;
for (auto i:*S)
{
if (i=='N')
sr--;
else if (i=='S')
sr++;
else if (i=='E')
sc++;
else sc--;
g[sr][sc]=1;
}
}
int colour(int ar, int ac, int br, int bc) {
col++;
u=ar,l=ac,d=br,r=bc;
ll ret=0;
for (int i=ar;i<=br;i++)
for (int u=ac;u<=bc;u++)
{
if (vis[i][u]!=col&&g[i][u]==0)
ret++,dfs(i,u);
}
return ret;
}
Compilation message
rainbow.cpp: In function 'void init(int, int, int, int, int, char*)':
rainbow.cpp:39:18: error: 'begin' was not declared in this scope
39 | for (auto i:*S)
| ^
rainbow.cpp:39:18: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
from rainbow.cpp:2:
/usr/include/c++/10/valarray:1224:5: note: 'std::begin'
1224 | begin(const valarray<_Tp>& __va)
| ^~~~~
In file included from /usr/include/c++/10/filesystem:46,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
from rainbow.cpp:2:
/usr/include/c++/10/bits/fs_dir.h:549:3: note: 'std::filesystem::__cxx11::begin'
549 | begin(recursive_directory_iterator __iter) noexcept
| ^~~~~
rainbow.cpp:39:18: error: 'end' was not declared in this scope
39 | for (auto i:*S)
| ^
rainbow.cpp:39:18: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
from rainbow.cpp:2:
/usr/include/c++/10/valarray:1244:5: note: 'std::end'
1244 | end(const valarray<_Tp>& __va)
| ^~~
In file included from /usr/include/c++/10/filesystem:46,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
from rainbow.cpp:2:
/usr/include/c++/10/bits/fs_dir.h:554:3: note: 'std::filesystem::__cxx11::end'
554 | end(recursive_directory_iterator) noexcept
| ^~~
