Submission #1869193

---

Source Code Expand

#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#include <climits>

#define rep(i, m, n) for(int i=int(m);i<int(n);i++)
#define EACH(i, c) for (auto &(i): c)
#define all(c) begin(c),end(c)
#define EXIST(s, e) ((s).find(e)!=(s).end())
#define SORT(c) sort(begin(c),end(c))
#define pb emplace_back
#define MP make_pair
#define SZ(a) int((a).size())

//#define LOCAL 0
//#ifdef LOCAL
//#define DEBUG(s) cout << (s) << endl
//#define dump(x)  cerr << #x << " = " << (x) << endl
//#define BR cout << endl;
//#else
//#define DEBUG(s) do{}while(0)
//#define dump(x) do{}while(0)
//#define BR
//#endif


//改造
typedef long long int ll;
using namespace std;
#define INF (1 << 20)
#define INFl (ll)5e15
#define DEBUG 0 //デバッグする時1にしてね
#define dump(x)  cerr << #x << " = " << (x) << endl

//ここから編集する


int main() {
    int N;
    cin >> N;
    vector<vector<ll> > A(N,vector<ll>(N,0)),B;
    rep(i,0,N){
        rep(j,0,N){
            cin >> A[i][j];
        }
    }
    B = A;

    rep(k,0,N){
        rep(i,0,N){
            rep(j,0,N){
                if(A[i][j] == A[i][k] + A[k][j] && i != k && j != k){
                    B[i][j] = 0;
                }else if(A[i][j] > A[i][k] + A[k][j]){
                    cout << -1 << endl;
                    return 0;
                }

            }
        }
    }

    ll ans = 0;
    rep(i,0,N){
        rep(j,0,N){
            ans += B[i][j];
        }
    }
    ans /= 2;
    cout << ans << endl;



    return 0;
}

Submission Info

Judge Result