#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define rng(i,c,n) for(int i=c;i<n;i++)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3SgiE60 ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vector<int>;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}
// e
const int inf=1e9;
signed main(){
_3SgiE60;
const int h=10;
int w;
cin>>w;
vec(vec(char)) a(h,vec(char)(w));
rep(i,h){
rep(j,w){
cin>>a[i][j];
}
}
auto ok=[&](int x,int y){
return min(x,y)>=0 and x<h and y<w;
};
const int di[]={-1,1};
const int dj[]={1,1};
using T=pair<int,pii>;
vec(vec(T)) dp(h,vec(T)(w));
rep(i,h){
rep(j,w){
dp[i][j]={inf,{-1,-1}};
}
}
auto affine=[&](int sx,int sy,int val,int x,int y,int ad)->void{
val+=ad;
if(dp[sx][sy].fi>val){
dp[sx][sy].fi=val;
dp[sx][sy].se={x,y};
}
};
auto dfs=[&](auto self,int x,int y)->int{
assert(a[x][y]=='.');
if(dp[x][y].fi!=inf) return dp[x][y].fi;
if(y==w-1) return dp[x][y].fi=0;
dp[x][y].fi=inf-1;
int sx=x,sy=y;
rep(_,11){
x+=di[0],y+=dj[0];
if(ok(x,y) and a[x][y]=='.'){
int nval=self(self,x,y);
// if(sx==h-1 and sy==0){
// print("ho",nval,x,y);
// }
affine(sx,sy,nval,x,y,1);
}else{
break;
}
}
x=sx,y=sy;
x+=di[1],y+=dj[1];
x=min(x,h-1);
if(ok(x,y) and a[x][y]=='.'){
int nval=self(self,x,y);
affine(sx,sy,nval,x,y,0);
}
return dp[sx][sy].fi;
};
dfs(dfs,h-1,0);
int x=h-1,y=0;
assert(dp[x][y].fi<inf);
cout<<dp[x][y].fi<<"\n";
while(y<w-1){
// print(x,y);
int nx,ny;
nx=dp[x][y].se.fi,ny=dp[x][y].se.se;
if(nx==-1 and ny==-1) break;
if(nx<x){
cout<<y<<" "<<ny-y<<"\n";
}
x=nx,y=ny;
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
468 KB |
Output is correct |
| 5 |
Correct |
5 ms |
1492 KB |
Output is correct |
| 6 |
Incorrect |
2 ms |
1108 KB |
Unexpected end of file - int32 expected |
| 7 |
Incorrect |
5 ms |
3028 KB |
Unexpected end of file - int32 expected |
| 8 |
Incorrect |
11 ms |
6996 KB |
Unexpected end of file - int32 expected |
| 9 |
Incorrect |
15 ms |
10324 KB |
Unexpected end of file - int32 expected |
| 10 |
Incorrect |
20 ms |
14272 KB |
Unexpected end of file - int32 expected |
