sume

input/code.cpp: In function 'int main()':
input/code.cpp:31:17: warning: unused variable 'dt' [-Wunused-variable]
   int de[1010], dt[1010];
                 ^

#include <bits/stdc++.h>

#define i64 long long
#define u64 unsigned long long
#define i32 int
#define u32 unsigned int

#define pii pair<int, int>
#define pll pair<long long, long long>

#define ld long double
#define defmod 1000000007

#define mati64(a,b) vector<vector<i64>>(a, vector<i64>(b, 0));
using namespace std;


int main(){
  cin.sync_with_stdio(0);
  cin.tie(0);
  int n; cin >> n;
  int t[1010][1010];
  for(int i = 0; i < n; ++i){
    for(int j = 0; j < n; ++j)
      cin >> t[i][j];
  }
  if(n == 2){
    cout << 1 << " " << 1 << endl;
    return 0;
  }
  int de[1010], dt[1010];
  for(int i = 2; i < n; ++i)
    de[i] = t[0][i]-t[0][i-1];
  
  cout << (t[0][1]+(t[n-1][0]-t[n-1][1]))/2 << " ";
  de[1] = t[n-1][1]-t[n-1][0];
  for(int i = 1; i < n; ++i){
    //cout << (t[i][i+1]) << " " << (de[i]) << endl;
    cout << (t[i][i-1]+de[i])/2 << " ";
  }
  cout << endl;
  return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED