Codeforces 711A.Bus to Udayland

165

题目


ZS the Coder and Chris the Baboon are travelling to Udayland! To get there, they have to get on the special IOI bus. The IOI bus has n rows of seats. There are 4 seats in each row, and the seats are separated into pairs by a walkway. When ZS and Chris came, some places in the bus was already occupied.

ZS and Chris are good friends. They insist to get a pair of neighbouring empty seats. Two seats are considered neighbouring if they are in the same row and in the same pair. Given the configuration of the bus, can you help ZS and Chris determine where they should sit



Input  


The first line of the input contains a single integer n (1 ≤ n ≤ 1000) — the number of rows of seats in the bus.

Then, n lines follow. Each line contains exactly 5 characters, the first two of them denote the first pair of seats in the row, the third character denotes the walkway (it always equals '|') and the last two of them denote the second pair of seats in the row.

Each character, except the walkway, equals to 'O' or to 'X'. 'O' denotes an empty seat, 'X' denotes an occupied seat. See the sample cases for more details.


Output  


If it is possible for Chris and ZS to sit at neighbouring empty seats, print "YES" (without quotes) in the first line. In the next n lines print the bus configuration, where the characters in the pair of seats for Chris and ZS is changed with characters '+'. Thus the configuration should differ from the input one by exactly two charaters (they should be equal to 'O' in the input and to '+' in the output).

If there is no pair of seats for Chris and ZS, print "NO" (without quotes) in a single line.

If there are multiple solutions, you may print any of them.

Examples  


input  


6
OO|OX
XO|XX
OX|OO
XX|OX
OO|OO
OO|XX


output  


YES
++|OX
XO|XX
OX|OO
XX|OX
OO|OO
OO|XX


input  


4
XO|OX
XO|XX
OX|OX
XX|OX


output  


NO


input  


5
XX|XX
XX|XX
XO|OX
XO|OO
OX|XO


output  


YES
XX|XX
XX|XX
XO|OX
XO|++
OX|XO


Note  


Note that the following is an incorrect configuration for the first sample case because the seats must be in the same pair.

O+|+X

XO|XX

OX|OO

XX|OX

OO|OO

OO|XX



题解



水题,给出公交车的座位情况 "O" 表示空位 "|" 表示过道 "X" 表示已经有人坐了
找出两个相邻的空位标记上 "+"

输入的时候判断下即可

直接模拟正常思路就行


代码


/*
By:OhYee
Github:OhYee
Blog:http://www.oyohyee.com/
Email:oyohyee@oyohyee.com

かしこいかわいい?
エリーチカ!
要写出来Хорошо的代码哦~
*/

#include <cstdio>
#include <algorithm>
#include <cstring>
#include <cmath>
#include <string>
#include <iostream>
#include <vector>
#include <list>
#include <queue>
#include <stack>
#include <map>
#include <set>
using namespace std;

const int maxn = 1005;
const int INF = 0x7FFFFFFF;

char seat[maxn][8];

bool  Do() {
    int n;
    if(!(cin >> n))
        return false;

    bool yes = false;
    for(int i = 0;i < n;i++) {
        cin >> seat[i];
        if(!yes&&seat[i][0] == 'O'&&seat[i][1] == 'O') {
            seat[i][0] = seat[i][1] = '+';
            yes = true;
        }
        if(!yes&&seat[i][3] == 'O'&&seat[i][4] == 'O') {
            seat[i][3] = seat[i][4] = '+';
            yes = true;
        }
    }
    if(yes) {
        cout << "YES" << endl;
        for(int i = 0;i < n;i++) {
            cout << seat[i]<<endl;
        }
    } else {
        cout << "NO" << endl;
    }
    return true;
}

int main() {
    while(Do());
    return 0;
}
发布评论
  • 点击查看/关闭被识别为广告的评论