#include <bits/stdc++.h>
#include "rainbow.h"
//#define int long long
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
using namespace std;
const int N=2e5+5;
int g[100][N],vis[100][N],cnt[100][N];
int r,c;
void init(int R, int C, int sr, int sc, int M, string S){
r=R;
c=C;
g[sr][sc]=1;
for(int i=0;i<M;i++){
if(S[i]=='N')sr--;
else if(S[i]=='S')sr++;
else if(S[i]=='W')sc--;
else sc++;
g[sr][sc]=1;
}
for(int i=1;i<=r;i++){
g[i][0]=1;
for(int j=1;j<=c;j++){
cnt[i][j]=cnt[i][j-1];
if(!g[i][j] && g[i][j-1])cnt[i][j]++;
}
}
}
int colour(int ar, int ac, int br, int bc){
if(r==2){
if(ar==br){
int ans=cnt[ar][bc]-cnt[ar][ac-1];
if(!g[ar][ac-1] && !g[ar][ac])ans++;
return ans;
}
int x=cnt[ar][bc]-cnt[ar][ac-1];
if(!g[ar][ac-1] && !g[ar][ac])x++;
int y=cnt[br][bc]-cnt[br][ac-1];
if(!g[br][ac-1] && !g[br][ac])y++;
if(x==1 && y==1)return 1;
int res=x+y;
if(!g[ar][ac] && !g[br][ac])res--;
if(!g[ar][bc] && !g[br][bc])res--;
return res;
}
queue <pair <int,int> > q;
vector <int> X={0,0,-1,1};
vector <int> Y={1,-1,0,0};
int ans=0;
for(int i=ar;i<=br;i++){
for(int j=ac;j<=bc;j++){
if(!vis[i][j] && !g[i][j]){
ans++;
vis[i][j]=1;
q.push({i,j});
while(!q.empty()){
int x=q.front().ff;
int y=q.front().ss;
q.pop();
for(int k=0;k<4;k++){
if(x+X[k]>=ar && x+X[k]<=br && y+Y[k]>=ac && y+Y[k]<=bc && !g[x+X[k]][y+Y[k]] && !vis[x+X[k]][y+Y[k]]){
vis[x+X[k]][y+Y[k]]=1;
q.push({x+X[k],y+Y[k]});
}
}
}
}
}
}
for(int i=1;i<=r;i++){
for(int j=1;j<=c;j++){
vis[i][j]=0;
}
}
return ans;
}
/*signed main(){
ios_base::sync_with_stdio();
cin.tie(0);cout.tie(0);
int r,c,m,q,x,y;
cin>>r>>c>>m>>q>>x>>y;
string s;
cin>>s;
init(r,c,x,y,m,s);
for(int i=0;i<q;i++){
int a,b,c,d;
cin>>a>>b>>c>>d;
cout<<colour(a,b,c,d)<<"\n";
}
}*/
Compilation message
/usr/bin/ld: /tmp/ccDWmoPt.o: in function `main':
grader.cpp:(.text.startup+0xed): undefined reference to `init(int, int, int, int, int, char*)'
collect2: error: ld returned 1 exit status
