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  1. /* AUTHOR: TUAN ANH - BUI */
  2. // ~~ icebear ~~
  3. #include <bits/stdc++.h>
  4. using namespace std;
  5.  
  6. typedef long long ll;
  7. typedef pair<int, int> ii;
  8. typedef pair<int, ii> iii;
  9.  
  10. template<class X, class Y>
  11.     bool minimize(X &x, const Y &y) {
  12.         if (x > y) return x = y, true;
  13.         return false;
  14.     }
  15.  
  16. template<class X, class Y>
  17.     bool maximize(X &x, const Y &y) {
  18.         if (x < y) return x = y, true;
  19.         return false;
  20.     }
  21.  
  22. #define FOR(i,a,b) for(int i=(a); i<=(b); ++i)
  23. #define FORR(i,a,b) for(int i=(a); i>=(b); --i)
  24. #define REP(i, n) for(int i=0; i<(n); ++i)
  25. #define RED(i, n) for(int i=(n)-1; i>=0; --i)
  26. #define MASK(i) (1LL << (i))
  27. #define BIT(S, i) (((S) >> (i)) & 1)
  28. #define mp make_pair
  29. #define pb push_back
  30. #define fi first
  31. #define se second
  32. #define all(x) x.begin(), x.end()
  33. #define task "icebear"
  34. /*END OF TEMPLATE. ICEBEAR AND THE CAT WILL WIN VOI26 */
  35.  
  36. const int MOD = 1e9 + 7;
  37. const int inf = (int)1e9 + 27092008;
  38. const ll INF  = (ll)1e18 + 27092008;
  39. const int N = 1000 + 5;
  40. int n, a[N][N];
  41.  
  42. void init(void) {
  43.     cin >> n;
  44.     FOR(i, 1, n) FOR(j, 1, n)
  45.         cin >> a[i][j];
  46. }
  47.  
  48. void process(void) {
  49.     FOR(i, 1, n) FOR(j, 1, n) if (a[i][j] < 0) {
  50.         cout << "NO";
  51.         exit(0);
  52.     }
  53.     FOR(i, 1, n) {
  54.         int sum = 0;
  55.         FOR(j, 1, n) if (i != j)
  56.             sum += a[i][j];
  57.         if (a[i][i] < sum) {
  58.             cout << "NO";
  59.             exit(0);
  60.         }
  61.     }
  62.  
  63.     int cnt = 0;
  64.     FOR(i, 1, n) {
  65.         int sum = 0;
  66.         FOR(j, 1, n) if (i != j)
  67.             sum += a[i][j];
  68.         if (a[i][i] > sum) cnt++;
  69.     }
  70.     if (cnt == 0) cout << "NO";
  71.     else {
  72.         cout << "YES\n" << cnt << '\n';
  73.     }
  74. }
  75.  
  76. int main() {
  77.     ios_base::sync_with_stdio(0);
  78.     cin.tie(0); cout.tie(0);
  79.     if (fopen(task".inp", "r")) {
  80.         freopen(task".inp", "r", stdin);
  81.         freopen(task".out", "w", stdout);
  82.     }
  83.     int tc = 1;
  84. //    cin >> tc;
  85.     while(tc--) {
  86.         init();
  87.         process();
  88.     }
  89.     return 0;
  90. }
  91.  
  92.  
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin 
Standard input is empty
stdout 
NO
https://ideone.com/fmUp6Y
language:
C++14 (gcc 8.3)
created:
2 hours ago
visibility:
public

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