poj 2996详解（题目很简单只是要认真看清楚题目，我写的代码有点长了，嘻嘻）

本文链接：https://blog.youkuaiyun.com/my_acm/article/details/25389651

Help Me with the Game

Time Limit: 1000MS		Memory Limit: 65536K
Total Submissions: 3157		Accepted: 2040

Description

Your task is to read a picture of a chessboard position and print it in the chess notation.

Input

The input consists of an ASCII-art picture of a chessboard with chess pieces on positions described by the input. The pieces of the white player are shown in upper-case letters, while the black player's pieces are lower-case letters. The letters are one of "K" (King), "Q" (Queen), "R" (Rook), "B" (Bishop), "N" (Knight), or "P" (Pawn). The chessboard outline is made of plus ("+"), minus ("-"), and pipe ("|") characters. The black fields are filled with colons (":"), white fields with dots (".").

Output

The output consists of two lines. The first line consists of the string "White: ", followed by the description of positions of the pieces of the white player. The second line consists of the string "Black: ", followed by the description of positions of the pieces of the black player.

The description of the position of the pieces is a comma-separated list of terms describing the pieces of the appropriate player. The description of a piece consists of a single upper-case letter that denotes the type of the piece (except for pawns, for that this identifier is omitted). This letter is immediatelly followed by the position of the piece in the standard chess notation -- a lower-case letter between "a" and "h" that determines the column ("a" is the leftmost column in the input) and a single digit between 1 and 8 that determines the row (8 is the first row in the input).

The pieces in the description must appear in the following order: King("K"), Queens ("Q"), Rooks ("R"), Bishops ("B"), Knights ("N"), and pawns. Note that the numbers of pieces may differ from the initial position because of capturing the pieces and the promotions of pawns. In case two pieces of the same type appear in the input, the piece with the smaller row number must be described before the other one if the pieces are white, and the one with the larger row number must be described first if the pieces are black. If two pieces of the same type appear in the same row, the one with the smaller column letter must appear first.

Sample Input

+---+---+---+---+---+---+---+---+
|.r.|:::|.b.|:q:|.k.|:::|.n.|:r:|
+---+---+---+---+---+---+---+---+
|:p:|.p.|:p:|.p.|:p:|.p.|:::|.p.|
+---+---+---+---+---+---+---+---+
|...|:::|.n.|:::|...|:::|...|:p:|
+---+---+---+---+---+---+---+---+
|:::|...|:::|...|:::|...|:::|...|
+---+---+---+---+---+---+---+---+
|...|:::|...|:::|.P.|:::|...|:::|
+---+---+---+---+---+---+---+---+
|:P:|...|:::|...|:::|...|:::|...|
+---+---+---+---+---+---+---+---+
|.P.|:::|.P.|:P:|...|:P:|.P.|:P:|
+---+---+---+---+---+---+---+---+
|:R:|.N.|:B:|.Q.|:K:|.B.|:::|.R.|
+---+---+---+---+---+---+---+---+

Sample Output

White: Ke1,Qd1,Ra1,Rh1,Bc1,Bf1,Nb1,a2,c2,d2,f2,g2,h2,a3,e4
Black: Ke8,Qd8,Ra8,Rh8,Bc8,Ng8,Nc6,a7,b7,c7,d7,e7,f7,h7,h6

题目大意：

白棋子用大写字母表示，黑棋子用小写字母表示，棋盘从上到下为8~1行，从左到右为a~h列。

对于相同白棋先按行小的排列在前，再按列小的排列前；对于相同黑棋先按行大的排列前，再按列小的排列前。

求棋盘棋子的布局。

AC代码：

#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std;
struct Node{
    char ch; int row;
}k_[1],K_[1],q_[1],Q_[1],r_[2],R_[2],b_[2],B_[2],n_[2],N_[2],p_[8],P_[8];   //小写表示黑棋，大写表示白棋 
char a[20][35];       //棋盘布局 
int mp1[9]={0,1,3,5,7,9,11,13,15};      //棋子在棋盘图中的列 
int mp2[9]={0,2,6,10,14,18,22,26,30};   //棋子在棋盘途中的行 
int ro[9]={0,8,7,6,5,4,3,2,1};                         //确定棋子所在行 
char mp[9]={'0','a','b','c','d','e','f','g','h'};      //确定棋子所在列 
int cmp1(Node tmp1,Node tmp2){    //白棋子排列方式 
    if(tmp1.row==tmp2.row)
        return tmp1.ch<tmp2.ch;
    return tmp1.row<tmp2.row;
}
int cmp2(Node tmp1,Node tmp2){    //黑棋子排列方式 
    if(tmp1.row==tmp2.row)
        return tmp1.ch<tmp2.ch;
    return tmp1.row>tmp2.row;
}
int main(){
    //freopen("in.txt","r",stdin);
    //freopen("out.txt","w",stdout);
    for(int i=0;i<17;i++)
        scanf("%s",a[i]);  
        
    int flag[13];   //标记各个棋子个数 
    for(int i=0;i<12;i++)
        flag[i]=0;
    for(int i=1;i<=8;i++)
        for(int j=1;j<=8;j++){
            if(a[mp1[i]][mp2[j]]=='.'||a[mp1[i]][mp2[j]]==':')
                continue;
            //确定黑棋布局 
            if(a[mp1[i]][mp2[j]]=='k'){
                k_[flag[0]].row=ro[i]; k_[flag[0]++].ch=mp[j];
            }
            else if(a[mp1[i]][mp2[j]]=='q'){
                q_[flag[1]].row=ro[i]; q_[flag[1]++].ch=mp[j];
            }
            else if(a[mp1[i]][mp2[j]]=='r'){
                r_[flag[2]].row=ro[i]; r_[flag[2]++].ch=mp[j];
            }
            else if(a[mp1[i]][mp2[j]]=='b'){
                b_[flag[3]].row=ro[i]; b_[flag[3]++].ch=mp[j];
            }
            else if(a[mp1[i]][mp2[j]]=='n'){
                n_[flag[4]].row=ro[i]; n_[flag[4]++].ch=mp[j];
            }
            else if(a[mp1[i]][mp2[j]]=='p'){
                p_[flag[5]].row=ro[i]; p_[flag[5]++].ch=mp[j];
            }
        
            //确定白起布局 
            else if(a[mp1[i]][mp2[j]]=='K'){
                K_[flag[6]].row=ro[i]; K_[flag[6]++].ch=mp[j];
            }
            else if(a[mp1[i]][mp2[j]]=='Q'){
                Q_[flag[7]].row=ro[i]; Q_[flag[7]++].ch=mp[j];
            }
            else if(a[mp1[i]][mp2[j]]=='R'){
                R_[flag[8]].row=ro[i]; R_[flag[8]++].ch=mp[j];
            }
            else if(a[mp1[i]][mp2[j]]=='B'){
                B_[flag[9]].row=ro[i]; B_[flag[9]++].ch=mp[j];
            }
            else if(a[mp1[i]][mp2[j]]=='N'){
                N_[flag[10]].row=ro[i]; N_[flag[10]++].ch=mp[j];
            }
            else if(a[mp1[i]][mp2[j]]=='P'){
                P_[flag[11]].row=ro[i]; 
                P_[flag[11]++].ch=mp[j];
            }

        }
    sort(r_,r_+flag[2],cmp2); sort(b_,b_+flag[3],cmp2); sort(n_,n_+flag[4],cmp2); sort(p_,p_+flag[5],cmp2);    //黑棋排序 
    sort(R_,R_+flag[8],cmp1); sort(B_,B_+flag[9],cmp1); sort(N_,N_+flag[10],cmp1); sort(P_,P_+flag[11],cmp1);  //白棋排序 
    //输出结果，注意格式 
    int sign=0;
    printf("White: ");
    if(flag[6]){
        printf("K%c%d",K_[0].ch,K_[0].row);
        sign=1;
    }
    if(flag[7]){
        if(sign)
            printf(",Q%c%d",Q_[0].ch,Q_[0].row);
        else{
            printf("Q%c%d",Q_[0].ch,Q_[0].row);
            sign=1;
        }
    }
    if(flag[8]){
        if(sign){
            for(int i=0;i<flag[8];i++)
                printf(",R%c%d",R_[i].ch,R_[i].row);
        }
        else{
            printf("R%c%d",R_[0].ch,R_[0].row);
            for(int i=1;i<flag[8];i++)
                printf(",R%c%d",R_[i].ch,R_[i].row);
            sign=1;
        }
    }
    if(flag[9]){
        if(sign){
            for(int i=0;i<flag[9];i++)
                printf(",B%c%d",B_[i].ch,B_[i].row);
        }
        else{
            printf("B%c%d",B_[0].ch,B_[0].row);
            for(int i=1;i<flag[9];i++)
                printf(",B%c%d",B_[i].ch,B_[i].row);
            sign=1;
        }
    }
    if(flag[10]){
        if(sign){
            for(int i=0;i<flag[10];i++)
                printf(",N%c%d",N_[i].ch,N_[i].row);
        }
        else{
            printf("N%c%d",N_[0].ch,N_[0].row);
            for(int i=1;i<flag[10];i++)
                printf(",N%c%d",N_[i].ch,N_[i].row);
            sign=1;
        }
    }
    if(flag[11]){
        if(sign){
            for(int i=0;i<flag[11];i++)
                printf(",%c%d",P_[i].ch,P_[i].row);
        }
        else{
            printf("%c%d",P_[0].ch,P_[0].row);
            for(int i=1;i<flag[11];i++)
                printf(",%c%d",P_[i].ch,P_[i].row);
            sign=1;
        }
    }
    printf("\n");
    
    printf("Black: ");
    sign=0;
    if(flag[0]){
        printf("K%c%d",k_[0].ch,k_[0].row);
        sign=1;
    }
    if(flag[1]){
        if(sign)
            printf(",Q%c%d",q_[0].ch,q_[0].row);
        else{
            printf("Q%c%d",q_[0].ch,q_[0].row);
            sign=1;
        }
    }
    if(flag[2]){
        if(sign){
            for(int i=0;i<flag[2];i++)
                printf(",R%c%d",r_[i].ch,r_[i].row);
        }
        else{
            printf("R%c%d",r_[0].ch,r_[0].row);
            for(int i=1;i<flag[2];i++)
                printf(",R%c%d",r_[i].ch,r_[i].row);
            sign=1;
        }
    }
    if(flag[3]){
        if(sign){
            for(int i=0;i<flag[3];i++)
                printf(",B%c%d",b_[i].ch,b_[i].row);
        }
        else{
            printf("B%c%d",b_[0].ch,b_[0].row);
            for(int i=1;i<flag[3];i++)
                printf(",B%c%d",b_[i].ch,b_[i].row);
            sign=1;
        }
    }
    if(flag[4]){
        if(sign){
            for(int i=0;i<flag[4];i++)
                printf(",N%c%d",n_[i].ch,n_[i].row);
        }
        else{
            printf("N%c%d",n_[0].ch,n_[0].row);
            for(int i=1;i<flag[4];i++)
                printf(",N%c%d",n_[i].ch,n_[i].row);
            sign=1;
        }
    }
    if(flag[5]){
        if(sign){
            for(int i=0;i<flag[5];i++)
                printf(",%c%d",p_[i].ch,p_[i].row);
        }
        else{
            printf("%c%d",p_[0].ch,p_[0].row);
            for(int i=1;i<flag[5];i++)
                printf(",%c%d",p_[i].ch,p_[i].row);
            sign=1;
        }
    }
    printf("\n");
    return 0;
}