题目链接:点击打开链接
题意:
给定一个n
构造 一个n*n矩阵使得每行恰好有一个[0,n-1]且关于主对角线对称
且主对角线必须全为0
#include<stdio.h> #include<iostream> #include<string.h> #include<set> #include<vector> #include<map> #include<math.h> #include<queue> #include<string> #include<stdlib.h> #include<algorithm> using namespace std; #define N 1015 #define LL __int64 #define ll int ll n; ll mp[N][N]; ll a[N<<2]; int main(){ ll i,j; while(~scanf("%d",&n)) { for(i=1;i<n;i++)a[i]=i; ll l = 1; for(i=1;i<=n-1;i++) { for(j=l;j<l+n-1;j++) mp[i][j-l+1] = a[j]; l++; a[n+l-2] = a[l-1]; } for(i=1;i<=n-1;i++) { mp[i][n] = mp[i][i]; mp[i][i] = 0; } for(i=1;i<=n-1;i++)mp[n][i] = mp[i][n]; mp[n][n] = 0; for(i=1;i<=n;i++) for(j=1;j<=n;j++)printf("%d%c",mp[i][j],j==n?'\n':' '); } return 0; }
Codeforces 12E Start of the season 构造 一个n*n矩阵使得每行恰好有一个[0,n-1]且对称
时间: 2024-10-12 23:17:25