Submission #871357

#	Time	Username	Problem	Language	Result	Execution time	Memory
871357		vjudge1	Quality Of Living (IOI10_quality)	C++14	Compilation error	0 ms	0 KiB

quality

#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define faster ios_base::sync_with_stdio(0); cin.tie(0);
#define int long long
using namespace std;
using lli = long long;
using ld = long double;
using pii = pair <int, int>;
mt19937_64 Rand(chrono::steady_clock::now().time_since_epoch().count());
const int maxn = 2e3 + 1000;
const int mod = 1e9 + 7;
lli m, n, h, w, q[maxn][maxn], a[maxn][maxn], pre[maxn][maxn];

/*void ReadInput()
{
    cin >> m >> n >> h >> w;
    for (lli i = 1; i <= m; i ++)
    {
        for (lli j = 1; j <= n; j ++)
        {
            cin >> q[i][j];
        }
    }
}*/
bool check(lli x)
{
    for (lli i = 1; i <= m; i ++)
    {
        for (lli j = 1; j <= n; j ++)
        {
            a[i][j] = 0;
        }
    }
    for (lli i = 1; i <= m; i ++)
    {
        for (lli j = 1; j <= n; j ++)
        {
            if (q[i][j] <= x)
            {
                a[i][j] = 1;
            }
        }
    }
    for (lli i = 1; i <= m; i ++)
    {
        for (lli j = 1; j <= n; j ++)
        {
            pre[i][j] = a[i][j] + pre[i][j - 1] + pre[i - 1][j] - pre[i - 1][j - 1];
            //cout << pre[i][j] << endl;
        }
    }
    //cout << endl;
    for (lli i = 1; i <= m - h + 1; i ++)
    {
        for (lli j = 1; j <= n - w + 1; j ++)
        {
            lli sum = pre[i + h - 1][j + w - 1] - pre[i + h - 1][j - 1] - pre[i - 1][j + w - 1] + pre[i - 1][j - 1];
            //cout << sum << endl;
            if (sum > (h * w - 1) / 2)
            {
                //cout << " " << 1;
                return true;
            }
        }
    }
    return false;
}

void rectangle()
{
    cin >> m >> n >> h >> w;
    for (lli i = 1; i <= m; i ++)
    {
        for (lli j = 1; j <= n; j ++)
        {
            cin >> q[i][j];
        }
    }
    lli l = 1, r = m * n, res = 0;
    while (l <= r)
    {
        lli mid = (l + r) / 2;
        if (check(mid))
        {
            res = mid;
            r = mid - 1;
        } else l = mid + 1;
        //cout << mid << endl;
    }
    cout << res;
}
/*#define debug
#define taskname "Quality of Living"
signed main(){
    faster
    if (fopen(taskname".inp", "r")){
        freopen(taskname".inp", "r", stdin);
        freopen(taskname".out", "w", stdout);
    }
    int tt = 1;
    //cin >> tt;
    while (tt--){
        ReadInput();
        Solve();
    }
    if (fopen("timeout.txt", "r")){
        ofstream timeout("timeout.txt");
        timeout << signed(double(clock()) / CLOCKS_PER_SEC * 1000);
        timeout.close();
        #ifndef debug
        cerr << "Time elapsed: " << signed(double(clock()) / CLOCKS_PER_SEC * 1000) << "ms\n";
        #endif // debug
    }
}/*

Compilation message (stderr)

quality.cpp:116:2: warning: "/*" within comment [-Wcomment]
  116 | }/*
      |   
quality.cpp:94:1: error: unterminated comment
   94 | /*#define debug
      | ^