oj.uz

Submission #833560

# Submission time Handle Problem Language Result Execution time Memory
833560 2023-08-22T06:51:24 Z vjudge1 Bomb (IZhO17_bomb) C++17
28 / 100
 1000 ms 74464 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
// using ld = long double;
#define all(x) begin(x), end(x)
#ifdef LOCAL
#define debug(...) __VA_ARGS__;
#else
#define debug(...)
#endif

template<class A, class B> ostream& operator<<(ostream& os, const pair<A, B> &p);
template<class T> ostream& operator<<(ostream& os, const vector<T> &v);
template<class T, size_t N> ostream& operator<<(ostream& os, const array<T, N> &v);

template<class A, class B>
ostream& operator<<(ostream& os, const pair<A, B> &p) {
  return os << '(' << p.first << ',' << p.second << ')';
}
 
template<class T>
ostream& operator<<(ostream& os, const vector<T> &v) {
  os << '{'; bool fs = 1;
  for(auto &i : v) { if(!fs) os << ','; os << i; fs = 0; }
  return os << '}';
}

template<class T, size_t N>
ostream& operator<<(ostream& os, const array<T, N> &v) {
  os << '{'; bool fs = 1;
  for(auto &i : v) { if(!fs) os << ','; os << i; fs = 0; }
  return os << '}';
}

void init() {
}
 
void solve(int tt = 0) {
  int n, m; cin >> n >> m;
  vector a(n, vector<int>(m));
  bool ok = 0;
  for(auto &v : a) for(int &i : v) {
    char c; cin >> c;
    i = c - '0';
    ok |= i;
  }
  if(!ok) return void(cout << 0 << '\n');
  vector pref(n, vector<int>(m));
  for(int i = 0; i < n; i++) {
    for(int j = 0; j < m; j++) {
      pref[i][j] = a[i][j];
      if(i > 0) pref[i][j] += pref[i-1][j];
      if(j > 0) pref[i][j] += pref[i][j-1];
      if(i > 0 && j > 0) pref[i][j] -= pref[i-1][j-1];
    }
  }
  const auto get = [&](int i1, int j1, int i2, int j2) -> int {
    int ans = pref[i2][j2];
    if(i1 > 0) ans -= pref[i1-1][j2];
    if(j1 > 0) ans -= pref[i2][j1-1];
    if(i1 > 0 && j1 > 0) ans += pref[i1-1][j1-1];
    return ans;
  };
  int ans = 0;
  vector b(n, vector<int>(m));
  for(int h = 1; h <= n; h++) {
    for(int w = 1; w <= m; w++) {
      debug(cerr << "h = " << h << " w = " << w << '\n');
      for(int i = 0; i+h-1 < n; i++) {
        for(int j = 0; j+w-1 < m; j++) {
          if(get(i, j, i+h-1, j+w-1) == h * w) {
            debug(cerr << i << ' ' << j << '\n');
            for(int ii = i; ii < i+h; ii++) {
              for(int jj = j; jj < j+w; jj++) {
                b[ii][jj] = 1;
              }
            }
          }
        }
      }
      if(a == b) ans = max(ans, h * w);
      debug({
        for(int i = 0; i+h-1 < n; i++) {
          for(int j = 0; j+w-1 < m; j++)
            cerr << b[i][j];
          cerr << '\n';
        }
      });
      for(int i = 0; i+h-1 < n; i++) {
        for(int j = 0; j+w-1 < m; j++)
          b[i][j] = 0;
      }
    }
  }
  cout << ans << '\n';
}

void reset() {
}
 
int main() {
  ios::sync_with_stdio(0); cin.tie(0);
  int t = 1; // cin >> t;
  init();
  for(int i = 1; i <= t; i++) solve(i), reset();
  return 0;
}

Subtask #1
28.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 850 ms 724 KB Output is correct
4 Correct 320 ms 724 KB Output is correct
5 Correct 35 ms 316 KB Output is correct
6 Correct 36 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 316 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Incorrect 1 ms 340 KB Output isn't correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 320 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 12 ms 388 KB Output is correct
18 Correct 9 ms 340 KB Output is correct
19 Correct 31 ms 400 KB Output is correct
20 Correct 30 ms 408 KB Output is correct
21 Correct 11 ms 340 KB Output is correct
22 Correct 25 ms 420 KB Output is correct
23 Correct 66 ms 444 KB Output is correct
24 Correct 20 ms 404 KB Output is correct
25 Correct 118 ms 444 KB Output is correct
26 Execution timed out 1075 ms 340 KB Time limit exceeded
27 Execution timed out 1069 ms 1236 KB Time limit exceeded
28 Execution timed out 1074 ms 1652 KB Time limit exceeded
29 Execution timed out 1069 ms 1916 KB Time limit exceeded
30 Execution timed out 1066 ms 2644 KB Time limit exceeded
31 Execution timed out 1086 ms 2256 KB Time limit exceeded
32 Execution timed out 1076 ms 2260 KB Time limit exceeded
33 Execution timed out 1070 ms 2900 KB Time limit exceeded
34 Execution timed out 1076 ms 1364 KB Time limit exceeded
35 Execution timed out 1084 ms 2900 KB Time limit exceeded
36 Execution timed out 1071 ms 2900 KB Time limit exceeded
37 Correct 1 ms 212 KB Output is correct
38 Execution timed out 1080 ms 74412 KB Time limit exceeded
39 Correct 1 ms 212 KB Output is correct
40 Execution timed out 1076 ms 9640 KB Time limit exceeded
41 Correct 1 ms 212 KB Output is correct
42 Correct 818 ms 444 KB Output is correct
43 Execution timed out 1075 ms 74408 KB Time limit exceeded
44 Execution timed out 1080 ms 2900 KB Time limit exceeded
45 Execution timed out 1080 ms 74412 KB Time limit exceeded
46 Execution timed out 1074 ms 74408 KB Time limit exceeded
47 Execution timed out 1036 ms 74380 KB Time limit exceeded
48 Execution timed out 1070 ms 74396 KB Time limit exceeded
49 Execution timed out 1070 ms 74408 KB Time limit exceeded
50 Execution timed out 1082 ms 74464 KB Time limit exceeded
51 Execution timed out 1067 ms 74408 KB Time limit exceeded
52 Execution timed out 1077 ms 74160 KB Time limit exceeded
53 Execution timed out 1083 ms 74152 KB Time limit exceeded
54 Execution timed out 1067 ms 74036 KB Time limit exceeded
55 Execution timed out 1086 ms 73888 KB Time limit exceeded
56 Execution timed out 1089 ms 73900 KB Time limit exceeded
57 Execution timed out 1083 ms 73872 KB Time limit exceeded
58 Execution timed out 1082 ms 73876 KB Time limit exceeded
59 Execution timed out 1089 ms 73888 KB Time limit exceeded
60 Execution timed out 1079 ms 73888 KB Time limit exceeded
61 Execution timed out 1073 ms 73904 KB Time limit exceeded
62 Execution timed out 1087 ms 73888 KB Time limit exceeded
63 Execution timed out 1094 ms 73880 KB Time limit exceeded
64 Execution timed out 1075 ms 73932 KB Time limit exceeded
65 Execution timed out 1088 ms 73892 KB Time limit exceeded
66 Execution timed out 1080 ms 73876 KB Time limit exceeded
67 Execution timed out 1084 ms 73956 KB Time limit exceeded
68 Execution timed out 1085 ms 73904 KB Time limit exceeded
69 Execution timed out 1094 ms 73876 KB Time limit exceeded
70 Execution timed out 1088 ms 47416 KB Time limit exceeded
71 Execution timed out 1088 ms 73932 KB Time limit exceeded
72 Execution timed out 1081 ms 73908 KB Time limit exceeded
73 Execution timed out 1087 ms 73876 KB Time limit exceeded
74 Execution timed out 1087 ms 73948 KB Time limit exceeded
75 Execution timed out 1087 ms 73904 KB Time limit exceeded
76 Execution timed out 1070 ms 73892 KB Time limit exceeded
77 Execution timed out 1084 ms 73932 KB Time limit exceeded
78 Execution timed out 1085 ms 73888 KB Time limit exceeded
79 Execution timed out 1048 ms 73876 KB Time limit exceeded
80 Execution timed out 1072 ms 73932 KB Time limit exceeded
81 Execution timed out 1081 ms 73968 KB Time limit exceeded
82 Execution timed out 1072 ms 73892 KB Time limit exceeded
83 Execution timed out 1084 ms 73904 KB Time limit exceeded
84 Execution timed out 1081 ms 73892 KB Time limit exceeded
85 Execution timed out 1079 ms 73880 KB Time limit exceeded
86 Execution timed out 1079 ms 73876 KB Time limit exceeded
87 Execution timed out 1083 ms 73900 KB Time limit exceeded
88 Execution timed out 1083 ms 73900 KB Time limit exceeded
89 Execution timed out 1080 ms 73968 KB Time limit exceeded
90 Execution timed out 1078 ms 47416 KB Time limit exceeded
91 Execution timed out 1076 ms 73904 KB Time limit exceeded
92 Execution timed out 1080 ms 73952 KB Time limit exceeded
93 Execution timed out 1088 ms 73904 KB Time limit exceeded
94 Execution timed out 1084 ms 73932 KB Time limit exceeded
95 Execution timed out 1081 ms 73876 KB Time limit exceeded
96 Execution timed out 1077 ms 73888 KB Time limit exceeded
97 Execution timed out 1087 ms 73904 KB Time limit exceeded
98 Execution timed out 1092 ms 73932 KB Time limit exceeded
99 Execution timed out 1077 ms 73892 KB Time limit exceeded
100 Execution timed out 1054 ms 73904 KB Time limit exceeded