제출 #165665

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
165665		Atill83	Jetpack (COCI16_jetpack)	C++14	80 / 80	36 ms	13304 KiB

jetpack

#include <bits/stdc++.h>
#define ff first
#define ss second
#define endl '\n'
using namespace std;
const long long INF = (long long) 1e18;
const int mod = (int) 1e9+7;
const int MAXN = (int) 3e5+5;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
ll n;
char grid[15][MAXN];
bool can[15][MAXN];
bool did[15][MAXN];
queue<pii>ans;
stack<pii>as;
bool do_it(int col, int row){
    //cout<<endl;
    //cout<<col<<" "<<row<<endl;
    
    if(grid[row][col] == 'X'){
        return false;
    }
    if(col == n){
        return can[row][col] = true;
    }
    if(did[row][col]){
        return can[row][col];
    }
    did[row][col] = 1;
    
    //cout<<col<<" "<<row<<endl;
    if(do_it(col + 1, max(0, row - 1))){
        return can[row][col] = true;
    }else if(do_it(col + 1, min(9, row + 1))){
        ans.push({col, 1});
        return can[row][col] = true;
    }else{
        return can[row][col] = false;
    }
}





int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);

    #ifdef Local
        freopen("../IO/int.txt","r",stdin);
        freopen("../IO/out.txt","w",stdout);
    #endif

    cin>>n;

    for(int j = 9; j >= 0; j--){
        for(int i = 0; i < n; i++){
            cin>>grid[j][i];
        }
    }

    do_it(0, 0);
    while(!ans.empty()){
        int cur = ans.front().ff, num = ans.front().ss;
        ans.pop();
        while(!ans.empty() && ans.front().ff == cur - 1){
            num++;
            cur--;
            ans.pop();
        }
        as.push({cur, num});
    }
    cout<<as.size()<<endl;
    while(!as.empty()){
        cout<<as.top().ff<<" "<<as.top().ss<<endl;
        as.pop();
    }
    #ifdef Local
        cout<<endl<<fixed<<setprecision(2)<<1000.0 * clock() / CLOCKS_PER_SEC<< " milliseconds ";
    #endif
}

• Subtask 1: 80 / 80