oj.uz

Submission #869705

# Submission time Handle Problem Language Result Execution time Memory
869705 2023-11-05T11:34:09 Z hentai_lover Bomb (IZhO17_bomb) C++14
0 / 100
 1000 ms 21960 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

#pragma GCC optimize("-O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")

#define pb push_back
#define fr(i, l, r) for(ll i = l; i <= r; ++ i)
#define rf(i, l, r) for(ll i = l; i >= r; -- i)

using namespace std;
using namespace __gnu_pbds;

template <typename T>
using _set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

typedef int ll;
typedef pair<ll, ll> pll;

const ll oo = ll(1e9) + 10;

ll p[3000][300];

ll get(ll x1, ll y1, ll x2, ll y2){
    return p[x2][y2] - p[x2][y1 - 1] - p[x1 - 1][y2] + p[x1 - 1][y1 - 1];
}

int main() {
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    ll n, m, ansx = 0, ansy = 0, ans = 0;
    cin >> n >> m;
    //if(n * m > 10000)return 0;
    char a[n + 1][m + 1];
    fr(i, 1, n)fr(j, 1, m){
        cin >> a[i][j];
        p[i][j] = p[i - 1][j] + p[i][j - 1] - p[i - 1][j - 1] + 1 - (a[i][j] - '0');
    }
    rf(r, n, 1){
        rf(c, m, 1){
            vector <pll> v;
            fr(i, 1, n - r + 1){
                fr(j, 1, m - c + 1){
                    //if(a[i][j] == '0')continue;
                    //cout << "i = " << i << " j = " << j << " get = " << get(i, j, i + r - 1, j + c - 1) << endl;
                    if(get(i, j, i + r - 1, j + c - 1) == 0)v.pb({i, j});
                }
            }
            reverse(v.begin(), v.end());
            //cout << "r = " << r << " c = " << c << endl;
            //cout << "v: " << endl;
            //for(auto i : v)cout << i.first << ' ' << i.second << endl;
            bool usd[n + 1][m + 1];
            fr(i, 1, n)fr(j, 1, m)usd[i][j] = 0;
            for(auto x : v){
                fr(i, 0, r - 1){
                    if(usd[x.first + i][x.second])break;
                    fr(j, 0, c - 1){
                        if(usd[x.first + i][x.second + j])break;
                        usd[x.first + i][x.second + j] = 1;
                    }
                }
            }

            bool ok = 1;
            fr(i, 1, n){
                fr(j, 1, m){
                    if(a[i][j] == '1' && usd[i][j] == 0)ok = 0;
                }
            }
            if(ok)ans = max(ans, r * c);
        }
    }
    //cout << ansx << ' ' << ansy << endl;


    ansx = oo, ansy = oo;

    fr(i, 1, n){
        fr(j, 1, m){
            if(a[i][j] == '0')continue;
            ll l = -1, r = -1, u = -1, d = -1;
            fr(x, i, n){
                if(a[x][j] == '0')break;
                r = x;
            }
            if(r < 0)r = n;
            rf(x, i, 1){
                if(a[x][j] == '0')break;
                l = x;
            }
            if(l < 0)l = 1;
            fr(x, j, m){
                if(a[i][x] == '0')break;
                d = x;
            }
            if(d < 0)d = m;
            rf(x, j, 1){
                //cout << "u = " << u << " i = " << i << " x = " << x << " a[i][x] = " << a[i][x] << endl;
                if(a[i][x] == '0')break;
                u = x;
            }
            if(u < 0)u = 1;


            ll a = r - l + 1;
            ll b = d - u + 1;
            //cout << "i = " << i << " j = " << j << "a = " << a << " b = " << b << " u = " << u << " d = " << d << endl;
            ansx = min(ansx, a);
            ansy = min(ansy, b);
        }
    }
    //cout << ansx << ' ' << ansy << endl;

    cout << ans;
    if(ans > ansx * ansy)cout<<1/0;
    cout << ansx * ansy << endl;
}


/*
3 3
011
111
111
*/

Compilation message

bomb.cpp: In function 'int main()':
bomb.cpp:116:33: warning: division by zero [-Wdiv-by-zero]
  116 |     if(ans > ansx * ansy)cout<<1/0;
      |                                ~^~

Subtask #1
0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Incorrect 0 ms 344 KB Output isn't correct
3 Incorrect 47 ms 3424 KB Output isn't correct
4 Incorrect 42 ms 3420 KB Output isn't correct
5 Incorrect 9 ms 540 KB Output isn't correct
6 Incorrect 3 ms 348 KB Output isn't correct
7 Incorrect 0 ms 348 KB Output isn't correct
8 Incorrect 0 ms 348 KB Output isn't correct
9 Incorrect 1 ms 468 KB Output isn't correct
10 Incorrect 0 ms 348 KB Output isn't correct
11 Incorrect 0 ms 348 KB Output isn't correct
12 Incorrect 1 ms 348 KB Output isn't correct
13 Incorrect 0 ms 348 KB Output isn't correct
14 Incorrect 0 ms 348 KB Output isn't correct
15 Incorrect 0 ms 344 KB Output isn't correct
16 Incorrect 1 ms 856 KB Output isn't correct
17 Incorrect 22 ms 348 KB Output isn't correct
18 Incorrect 14 ms 348 KB Output isn't correct
19 Incorrect 40 ms 572 KB Output isn't correct
20 Incorrect 43 ms 604 KB Output isn't correct
21 Incorrect 16 ms 360 KB Output isn't correct
22 Incorrect 40 ms 360 KB Output isn't correct
23 Incorrect 84 ms 608 KB Output isn't correct
24 Incorrect 33 ms 616 KB Output isn't correct
25 Incorrect 79 ms 616 KB Output isn't correct
26 Incorrect 177 ms 1060 KB Output isn't correct
27 Execution timed out 1067 ms 3292 KB Time limit exceeded
28 Execution timed out 1051 ms 2908 KB Time limit exceeded
29 Execution timed out 1055 ms 3096 KB Time limit exceeded
30 Execution timed out 1024 ms 3160 KB Time limit exceeded
31 Execution timed out 1032 ms 2904 KB Time limit exceeded
32 Execution timed out 1062 ms 2908 KB Time limit exceeded
33 Execution timed out 1058 ms 3164 KB Time limit exceeded
34 Execution timed out 1027 ms 2904 KB Time limit exceeded
35 Execution timed out 1080 ms 3164 KB Time limit exceeded
36 Execution timed out 1058 ms 3412 KB Time limit exceeded
37 Incorrect 1 ms 344 KB Output isn't correct
38 Execution timed out 1018 ms 21840 KB Time limit exceeded
39 Incorrect 0 ms 344 KB Output isn't correct
40 Execution timed out 1049 ms 4816 KB Time limit exceeded
41 Incorrect 1 ms 344 KB Output isn't correct
42 Incorrect 114 ms 604 KB Output isn't correct
43 Execution timed out 1062 ms 21612 KB Time limit exceeded
44 Execution timed out 1063 ms 3264 KB Time limit exceeded
45 Execution timed out 1043 ms 21588 KB Time limit exceeded
46 Execution timed out 1022 ms 21584 KB Time limit exceeded
47 Execution timed out 1030 ms 21704 KB Time limit exceeded
48 Execution timed out 1068 ms 21576 KB Time limit exceeded
49 Execution timed out 1028 ms 21500 KB Time limit exceeded
50 Execution timed out 1006 ms 21704 KB Time limit exceeded
51 Execution timed out 1052 ms 21588 KB Time limit exceeded
52 Execution timed out 1034 ms 21824 KB Time limit exceeded
53 Execution timed out 1058 ms 21584 KB Time limit exceeded
54 Execution timed out 1044 ms 21712 KB Time limit exceeded
55 Execution timed out 1025 ms 21708 KB Time limit exceeded
56 Execution timed out 1020 ms 21580 KB Time limit exceeded
57 Execution timed out 1030 ms 21592 KB Time limit exceeded
58 Execution timed out 1029 ms 21588 KB Time limit exceeded
59 Execution timed out 1051 ms 21704 KB Time limit exceeded
60 Execution timed out 1101 ms 21584 KB Time limit exceeded
61 Execution timed out 1016 ms 21584 KB Time limit exceeded
62 Execution timed out 1036 ms 21708 KB Time limit exceeded
63 Execution timed out 1008 ms 21752 KB Time limit exceeded
64 Execution timed out 1028 ms 21580 KB Time limit exceeded
65 Execution timed out 1010 ms 21584 KB Time limit exceeded
66 Execution timed out 1018 ms 21588 KB Time limit exceeded
67 Execution timed out 1018 ms 21708 KB Time limit exceeded
68 Execution timed out 1018 ms 21760 KB Time limit exceeded
69 Execution timed out 1034 ms 21584 KB Time limit exceeded
70 Execution timed out 1041 ms 14420 KB Time limit exceeded
71 Execution timed out 1037 ms 21588 KB Time limit exceeded
72 Execution timed out 1030 ms 21580 KB Time limit exceeded
73 Execution timed out 1043 ms 21580 KB Time limit exceeded
74 Execution timed out 1044 ms 21588 KB Time limit exceeded
75 Execution timed out 1018 ms 21608 KB Time limit exceeded
76 Execution timed out 1027 ms 21588 KB Time limit exceeded
77 Execution timed out 1065 ms 21636 KB Time limit exceeded
78 Execution timed out 1032 ms 21584 KB Time limit exceeded
79 Execution timed out 1051 ms 21624 KB Time limit exceeded
80 Execution timed out 1022 ms 21576 KB Time limit exceeded
81 Execution timed out 1022 ms 21584 KB Time limit exceeded
82 Execution timed out 1032 ms 21584 KB Time limit exceeded
83 Execution timed out 1027 ms 21632 KB Time limit exceeded
84 Execution timed out 1069 ms 21704 KB Time limit exceeded
85 Execution timed out 1032 ms 21708 KB Time limit exceeded
86 Execution timed out 1104 ms 21708 KB Time limit exceeded
87 Execution timed out 1067 ms 21720 KB Time limit exceeded
88 Execution timed out 1082 ms 21588 KB Time limit exceeded
89 Execution timed out 1056 ms 21960 KB Time limit exceeded
90 Execution timed out 1047 ms 14616 KB Time limit exceeded
91 Execution timed out 1066 ms 21588 KB Time limit exceeded
92 Execution timed out 1058 ms 21716 KB Time limit exceeded
93 Execution timed out 1064 ms 21588 KB Time limit exceeded
94 Execution timed out 1033 ms 21704 KB Time limit exceeded
95 Execution timed out 1010 ms 21708 KB Time limit exceeded
96 Execution timed out 1090 ms 21584 KB Time limit exceeded
97 Execution timed out 1022 ms 21580 KB Time limit exceeded
98 Execution timed out 1041 ms 21588 KB Time limit exceeded
99 Execution timed out 1052 ms 21836 KB Time limit exceeded
100 Execution timed out 1054 ms 21588 KB Time limit exceeded