#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=100010;
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};
vec(vi) usd(h,vi(w,-1));
auto reachable=[&](auto self,int x,int y)->bool{
if(usd[x][y]!=-1) return usd[x][y];
if(y==w-1) return usd[x][y]=true;
int nx=x+di[0],ny=y+dj[0];
bool pok=0;
if(ok(nx,ny) and a[nx][ny]=='.'){
pok=pok or self(self,nx,ny);
}
nx=x+di[1],ny=y+dj[1];
nx=min(nx,h-1);
if(ok(nx,ny) and a[nx][ny]=='.'){
pok=pok or self(self,nx,ny);
}
return usd[x][y]=pok;
};
assert(reachable(reachable,h-1,0));
// 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(nval<=w){
// 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);
// if(nval<=w){
// 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-1);
// 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;
// }
}
Compilation message
jetpack.cpp: In instantiation of 'main()::<lambda(auto:23, int, int)> [with auto:23 = main()::<lambda(auto:23, int, int)>]':
jetpack.cpp:54:2: required from here
jetpack.cpp:41:30: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
41 | if(y==w-1) return usd[x][y]=true;
jetpack.cpp:52:19: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
52 | return usd[x][y]=pok;
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
212 KB |
Unexpected end of file - int32 expected |
| 2 |
Incorrect |
0 ms |
212 KB |
Unexpected end of file - int32 expected |
| 3 |
Incorrect |
1 ms |
212 KB |
Unexpected end of file - int32 expected |
| 4 |
Incorrect |
1 ms |
340 KB |
Unexpected end of file - int32 expected |
| 5 |
Incorrect |
2 ms |
980 KB |
Unexpected end of file - int32 expected |
| 6 |
Runtime error |
2 ms |
1236 KB |
Execution killed with signal 6 |
| 7 |
Runtime error |
5 ms |
2644 KB |
Execution killed with signal 6 |
| 8 |
Runtime error |
10 ms |
5400 KB |
Execution killed with signal 6 |
| 9 |
Runtime error |
18 ms |
7856 KB |
Execution killed with signal 6 |
| 10 |
Runtime error |
19 ms |
10604 KB |
Execution killed with signal 6 |
