#include <bits/stdc++.h>
using namespace std;
void solve()
{
/// JUST KEEP GOING
const int nx[4] = {0, 0, 1, -1}, ny[4] = {1, -1, 0, 0};
int n, m; cin>>n>>m; char grid[n][m]; int d[n][m];
int sx, sy; int ex, ey;
for(int l=0;l<n;l++) {
for(int i=0;i<m;i++) {
cin>>grid[l][i]; d[l][i]=1000000000;
if(grid[l][i]=='S') {
sx=l; sy=i; d[sx][sy]=0;
}
else if(grid[l][i]=='C') {
ex=l; ey=i;
}
}
}
priority_queue<pair<int, pair<int, int>>>pq; pq.push({0, {sx, sy}});
while(!pq.empty()) {
int a=pq.top().second.first, b=pq.top().second.second, w=-pq.top().first; pq.pop(); bool wall=false;
if(a==ex&&b==ey) { cout<<w<<'\n'; return; }
if(d[a][y]<w) continue;
for(int l=0;l<4;l++) {
int x=a+nx[l], y=b+ny[l];
if(x<0||x>=n||y<0||y>=m||grid[x][y]=='#') {
wall=true; continue;
}
if(d[x][y]>d[a][b]+1) {
d[x][y]=d[a][b]+1; pq.push({-d[x][y], {x, y}});
}
}
int p=1000000000;
if(!wall) {
for(int l=0;l<4;l++) {
int x=a, y=b; int k=0;
while(x>=0&&y>=0&&x<n&&y<m&&grid[x][y]!='#') {
x+=nx[l]; y+=ny[l]; k++;
}
x-=nx[l]; y-=ny[l];
p=min(p, k);
}
}
else p=1;
for(int l=0;l<4;l++) {
int x=a, y=b;
while(x>=0&&y>=0&&x<n&&y<m&&grid[x][y]!='#') {
x+=nx[l]; y+=ny[l];
}
x-=nx[l], y-=ny[l];
if(d[x][y]>d[a][b]+p) {
d[x][y]=d[a][b]+p; pq.push({-d[x][y], {x, y}});
}
}
}
}
int32_t main()
{
int t; t=1;
while(t--) {
solve();
}
return 0;
}
Compilation message
portals.cpp: In function 'void solve()':
portals.cpp:26:16: error: 'y' was not declared in this scope
26 | if(d[a][y]<w) continue;
| ^
