Submission #536688

#	Time	Username	Problem	Language	Result	Execution time	Memory
536688		ali22413836	Jetpack (COCI16_jetpack)	C++14	80 / 80	28 ms	7104 KiB

jetpack

#include <bits/stdc++.h>
#define  endl "\n"
using namespace std ;
typedef long long ll;
typedef long double ld ;
const int N=2e7;
const ll inf=1e18 ;
const ll mod = 1e9 + 7 ;
ll mypower(ll x, ll y){
    if(y == 0) return 1 ;
    if(y == 1) return x ;
    ll ret = mypower(x , y / 2);
    ret = (ret * ret) % mod;
    if(y % 2) ret = ( ret * x ) % mod ;
    return ret ;
}
ll n ;
char a[20][100009] ;
vector < ll > ans ;
ll la ;
bool sol(ll i , ll j){
    if(a[i][j] == 'X'){
        return 0 ;
    }
    a[i][j] = 'X' ;
    if(j == n){
        return 1 ;
    }
    if(sol(max(i - 1 , 1ll) , j + 1)){
        ans.push_back(j - 1) ;
        return 1 ;
    }
    if(sol(min(i + 1 , 10ll) , j + 1)){
        return 1 ;
    }
    return 0 ;
}
int main(){
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> n ;
    for(int j = 1 ; j <= 10 ; j++){
        for(int i = 1 ; i <= n ; i++){
            cin >> a[j][i] ;
        }
    }
    sol(10 , 1) ;
    cout << ans.size() << endl ;
    reverse(ans.begin() , ans.end()) ;
    for(auto p : ans){
        cout << p << " " << 1 << endl ;
    }
//    for(int i = 0 ; i < 10 ;i++){
//        for(int j = 0 ; j< n ;j++){
//            cout << a[i][j] ;
//        }
//        cout << endl ;
//    }
//    cout << a[9][0] << endl ;
    return 0 ;
}

• Subtask 1: 80 / 80