oj.uz

Submission #869707

# Submission time Handle Problem Language Result Execution time Memory
869707 2023-11-05T11:36:42 Z hentai_lover Bomb (IZhO17_bomb) C++14
26 / 100
 1000 ms 15696 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
26.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 48 ms 3420 KB Output is correct
4 Correct 43 ms 3412 KB Output is correct
5 Correct 9 ms 348 KB Output is correct
6 Correct 3 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Incorrect 21 ms 548 KB Output isn't correct
18 Correct 16 ms 348 KB Output is correct
19 Correct 43 ms 572 KB Output is correct
20 Correct 51 ms 348 KB Output is correct
21 Correct 17 ms 348 KB Output is correct
22 Incorrect 40 ms 348 KB Output isn't correct
23 Correct 90 ms 600 KB Output is correct
24 Correct 31 ms 556 KB Output is correct
25 Correct 86 ms 600 KB Output is correct
26 Correct 179 ms 780 KB Output is correct
27 Execution timed out 1064 ms 3148 KB Time limit exceeded
28 Execution timed out 1062 ms 2652 KB Time limit exceeded
29 Execution timed out 1056 ms 2972 KB Time limit exceeded
30 Execution timed out 1057 ms 2908 KB Time limit exceeded
31 Execution timed out 1064 ms 2908 KB Time limit exceeded
32 Execution timed out 1042 ms 2904 KB Time limit exceeded
33 Execution timed out 1051 ms 2904 KB Time limit exceeded
34 Execution timed out 1055 ms 2652 KB Time limit exceeded
35 Execution timed out 1045 ms 2908 KB Time limit exceeded
36 Execution timed out 1020 ms 3408 KB Time limit exceeded
37 Correct 1 ms 348 KB Output is correct
38 Execution timed out 1091 ms 15456 KB Time limit exceeded
39 Correct 1 ms 344 KB Output is correct
40 Execution timed out 1044 ms 4188 KB Time limit exceeded
41 Incorrect 1 ms 344 KB Output isn't correct
42 Incorrect 121 ms 628 KB Output isn't correct
43 Execution timed out 1040 ms 15440 KB Time limit exceeded
44 Execution timed out 1057 ms 3060 KB Time limit exceeded
45 Execution timed out 1049 ms 15444 KB Time limit exceeded
46 Execution timed out 1079 ms 15444 KB Time limit exceeded
47 Execution timed out 1031 ms 15440 KB Time limit exceeded
48 Execution timed out 1042 ms 15440 KB Time limit exceeded
49 Execution timed out 1039 ms 15456 KB Time limit exceeded
50 Execution timed out 1074 ms 15444 KB Time limit exceeded
51 Execution timed out 1056 ms 15456 KB Time limit exceeded
52 Execution timed out 1062 ms 15460 KB Time limit exceeded
53 Execution timed out 1080 ms 15576 KB Time limit exceeded
54 Execution timed out 1076 ms 15440 KB Time limit exceeded
55 Execution timed out 1085 ms 15440 KB Time limit exceeded
56 Execution timed out 1020 ms 15452 KB Time limit exceeded
57 Execution timed out 1040 ms 15412 KB Time limit exceeded
58 Execution timed out 1065 ms 15440 KB Time limit exceeded
59 Execution timed out 1059 ms 15440 KB Time limit exceeded
60 Execution timed out 1024 ms 15440 KB Time limit exceeded
61 Execution timed out 1058 ms 15544 KB Time limit exceeded
62 Execution timed out 1047 ms 15444 KB Time limit exceeded
63 Execution timed out 1027 ms 15624 KB Time limit exceeded
64 Execution timed out 1031 ms 15444 KB Time limit exceeded
65 Execution timed out 1047 ms 15440 KB Time limit exceeded
66 Execution timed out 1040 ms 15444 KB Time limit exceeded
67 Execution timed out 1074 ms 15592 KB Time limit exceeded
68 Execution timed out 1038 ms 15440 KB Time limit exceeded
69 Execution timed out 1029 ms 15440 KB Time limit exceeded
70 Execution timed out 1068 ms 10440 KB Time limit exceeded
71 Execution timed out 1032 ms 15440 KB Time limit exceeded
72 Execution timed out 1049 ms 15440 KB Time limit exceeded
73 Execution timed out 1034 ms 15440 KB Time limit exceeded
74 Execution timed out 1047 ms 15440 KB Time limit exceeded
75 Execution timed out 1054 ms 15444 KB Time limit exceeded
76 Execution timed out 1006 ms 15440 KB Time limit exceeded
77 Execution timed out 1071 ms 15440 KB Time limit exceeded
78 Execution timed out 1043 ms 15440 KB Time limit exceeded
79 Execution timed out 1058 ms 15612 KB Time limit exceeded
80 Execution timed out 1045 ms 15440 KB Time limit exceeded
81 Execution timed out 1064 ms 15440 KB Time limit exceeded
82 Execution timed out 1035 ms 15436 KB Time limit exceeded
83 Execution timed out 1076 ms 15440 KB Time limit exceeded
84 Execution timed out 1051 ms 15440 KB Time limit exceeded
85 Execution timed out 1069 ms 15696 KB Time limit exceeded
86 Execution timed out 1070 ms 15444 KB Time limit exceeded
87 Execution timed out 1068 ms 15448 KB Time limit exceeded
88 Execution timed out 1045 ms 15440 KB Time limit exceeded
89 Execution timed out 1071 ms 15436 KB Time limit exceeded
90 Execution timed out 1020 ms 10424 KB Time limit exceeded
91 Execution timed out 1064 ms 15440 KB Time limit exceeded
92 Execution timed out 1049 ms 15440 KB Time limit exceeded
93 Execution timed out 1012 ms 15440 KB Time limit exceeded
94 Execution timed out 1050 ms 15440 KB Time limit exceeded
95 Execution timed out 1076 ms 15440 KB Time limit exceeded
96 Execution timed out 1043 ms 15440 KB Time limit exceeded
97 Execution timed out 1051 ms 15440 KB Time limit exceeded
98 Execution timed out 1096 ms 15444 KB Time limit exceeded
99 Execution timed out 1043 ms 15440 KB Time limit exceeded
100 Execution timed out 1056 ms 15440 KB Time limit exceeded