Submission #1267775

#	Time	Username	Problem	Language	Result	Execution time	Memory
1267775		coderg	Jetpack (COCI16_jetpack)	C++20	80 / 80	41 ms	8380 KiB

jetpack

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;

ll n;
vector<vector<char>> a;
vector<ll> v;
ll dfs(ll x,ll y){
	if(a[x][y]=='X')return 0;
	if(y==n-1)return 1;
	a[x][y]='X';
	if(dfs(min(9LL,x+1),y+1)==1)return 1;
	 if(dfs(max(0LL,x-1),y+1)==1){
		v.push_back(y);
		return 1;
	}
	return 0;
}
signed main(){
	cin>>n;
	a.assign(10,vector<char>(n+1));
	for(ll i=0;i<10;i++){
		for(ll j=0;j<n;j++)
			cin>>a[i][j];
	}
	dfs(9,0);
	reverse(v.begin(),v.end());
	cout<<v.size()<<"\n";
	for(auto x:v)
		cout<<x<<" "<<1<<"\n";
}

• Subtask 1: 80 / 80