Submission #173740

#	Time	Username	Problem	Language	Result	Execution time	Memory
173740		srvlt	Bomb (IZhO17_bomb)	C++14	12 / 100	230 ms	30176 KiB

bomb

//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ordered_set tree <pair <int, int>, null_type, less <pair <int, int> >, rb_tree_tag, tree_order_statistics_node_update>
using namespace __gnu_pbds;

#define ll long long
#define db double
#define pb push_back
#define ppb pop_back
#define fi first
#define se second
#define mp make_pair
#define size(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()

#define endl "\n"
//#define int long long

using namespace std;

void dout() {
    cerr << endl;
}
template <typename Head, typename... Tail>
void dout(Head H, Tail... T) {
    cerr << H << ' ';
    dout(T...);
}

//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef pair <int, int> pii;

const int N = 2503, inf = 1e4;
int n, m, a[N][N], H = inf, W = inf;
int row[N], col[N];

void solve(int tc) {
    // check for (int i = 0; i < n; j++)
    cin >> n >> m;
    char c;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            cin >> c;
            a[i][j] = (c - '0');
        }
    }
    int cur;
    for (int i = 1; i <= n; i++) {
        cur = 0;
        memset(row, 0, sizeof(row));
        for (int j = 1; j <= m; j++) {
            if (a[i][j]) {
                row[j] = row[j - 1] + 1;
                cur++;
            }   else if (cur > 0) {
                W = min(W, cur);
                cur = 0;
            }
        }
    }
    for (int j = 1; j <= m; j++) {
        cur = 0;
        memset(col, 0, sizeof(col));
        for (int i = 1; i <= n; i++) {
            if (a[i][j]) {
                col[i] = col[i - 1] + 1;
                cur++;
            }   else if (cur > 0) {
                H = min(H, cur);
                cur = 0;
            }
        }
    }
    cout << H * W;
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
//    freopen("input.txt", "r", stdin);
//    freopen("output.txt", "w", stdout);
    int tc = 1;
//    cin >> tc;
    for (int i = 0; i < tc; i++) {
        solve(i);
//        cleanup();
    }
}

• Subtask 1: 12 / 100