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  1.     #include <bits/stdc++.h>
  2.  
  3.     using namespace std;
  4.  
  5.     typedef long long ll;
  6.     typedef long double dbl;
  7.     typedef vector <int> vi;
  8.     typedef pair <int, int> pii;
  9.  
  10.     int const N = 1002;
  11.     int const MD = 1000000007;
  12.  
  13.     #define FOR(i, a, b) for (int (i) = (a); (i) <= (b); ++(i))
  14.     #define RFOR(i, a, b) for (int (i) = (a); (i) >= (b); --(i))
  15.     #define REP(i, n) FOR(i, 0, n - 1)
  16.     #define pb push_back
  17.     #define mp make_pair
  18.     #define X first
  19.     #define Y second
  20.     #define sz(v) int(v.size())
  21.  
  22.     int res[N][N];
  23.  
  24.     int main() {
  25.     	int N, M, K;
  26.     	scanf("%d%d%d", &N, &M, &K);
  27.     	vector <pii> parts;
  28.     	FOR (i, 1, N) {
  29.     		FOR (j, 1, M) {
  30.     			if (i & 1) {
  31.     				parts.pb(mp(i, j));
  32.     			} else {
  33.     				parts.pb(mp(i, M - j + 1));
  34.     			}
  35.     		}
  36.     	}
  37.     	int X = (N * M) / K;
  38.     	int ptr = 0;
  39.     	FOR (it, 1, (N * M) % K) {
  40.     		FOR (i, 1, X + 1) {
  41.     			res[parts[ptr].X][parts[ptr].Y] = it;
  42.     			++ptr;
  43.     		}
  44.     	}
  45.     	FOR (it, (N * M) % K + 1, K) {
  46.     		FOR (i, 1, X) {			
  47.     			assert (ptr < sz(parts));
  48.     			res[parts[ptr].X][parts[ptr].Y] = it;
  49.     			++ptr;
  50.     		}
  51.     	}
  52.     	assert (ptr == sz(parts));
  53.     	FOR (i, 1, N) {
  54.     		FOR (j, 1, M) {
  55.     			printf("%d%c", res[i][j], j == M ? '\n' : ' ');
  56.     		}
  57.     	}
  58.     	return 0;
  59.     }
  60.  
Time limit exceeded #stdin #stdout 5s 0KB
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https://ideone.com/uH9coT
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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