#include "stdio.h"
#include "string.h"
#include "stdlib.h"

#define N 5

void main(){
int a[N][N]={0};
int i,j;
int k;

i = 0;
j = N/2;
a[0][j]=1;
for(k = 2; k <= N*N; k++){
if( i == 0 && j == N-1 ){//先判斷前一個數(shù)是不是最右上角的數(shù)，若是后一個數(shù)直接填在前一個數(shù)下方
i=i+1;
a[i][j] = k;
continue;
}
i = (i-1+N)%N;//計(jì)算前一個數(shù)右上角的坐標(biāo)
j = (j+1)%N;
if(a[i][j] != 0){//若前一個數(shù)的右上角有元素，后一個數(shù)直接填在前一個數(shù)下方
i = ((i+1)%N+1)%N;//恢復(fù)坐標(biāo)
j = (j-1+N)%N;
a[i][j] = k;
}else{//上述條件均不滿足，后一個數(shù)放在前一個數(shù)的右上角
a[i][j] = k;
}
}

for(i = 0; i < N; i++){
for(j = 0; j < N; j++){
printf("M",a[i][j]);
}
printf("\n");
}
}