65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
#include <cstdlib>
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#include <cctype>
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#include <cstring>
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#include <cstdio>
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#include <cmath>
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#include <algorithm>
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#include <vector>
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#include <string>
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#include <iostream>
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#include <sstream>
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#include <map>
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#include <set>
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#include <queue>
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#include <stack>
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#include <fstream>
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#include <numeric>
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#include <iomanip>
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#include <bitset>
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#include <list>
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#include <stdexcept>
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#include <functional>
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#include <utility>
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#include <ctime>
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using namespace std;
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typedef long long LL;
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typedef unsigned long long ULL;
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#define MAX(a,b) ((a) > (b) ? (a) : (b))
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#define MEM(a,b) memset((a),(b),sizeof(a))
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const LL INF = 1000000007;
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const int N = 1e3+10;
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const double eps = 1e-12;
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int a[N][N];
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int main()
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{
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int n;
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while (scanf("%d", &n) != EOF)
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{
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if (n == 0) break;
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int flag = 1;
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for (int i = 0; i < n; i++)
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{
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for (int j = 0; j < n; j++)
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{
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scanf("%d", &a[i][j]);
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}
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}
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for (int i = 0; i < n; i++)
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{
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for (int j = i + 1; j < n; j++)
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{
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if (a[i][i] + a[j][j] != a[i][j] + a[j][i])
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{
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flag = 0;
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break;
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}
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}
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if (flag == 0) break;
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}
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if (flag) puts("homogeneous");
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else puts("not homogeneous");
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}
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return 0;
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}
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