Submission #197244

#	Time	Username	Problem	Language	Result	Execution time	Memory
197244		_TimeLord_	Maxcomp (info1cup18_maxcomp)	C++14	60 / 100	599 ms	4344 KiB

maxcomp

#include <bits/stdc++.h>
 
using namespace std;
using namespace chrono;
 
#pragma GCC optimize("Ofast")
#pragma GCC target("tune=native")
#pragma GCC optimize("unroll-loops")
 
typedef long long ll;
typedef long double ld;
 
#define fs first
#define sc second
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pb push_back
#define maxn 200000
#define BIG 1000000000000000000
 
mt19937 rnd(42);
 
int a[1000][1000];
 
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    for(int i = 0; i < n; i++){
        for(int j = 0; j < m; j++)
            cin >> a[i][j];
    }
    int ans = -1e9;
    for(int i = 0; i < 100; i++){
        int bx = abs(int(rnd()))%n; int by = abs(int(rnd()))%m;
        for(int o = 0; o < 25; o++){
            int x = -1, y;
            for(int i = 0; i < n; i++)
                for(int j = 0; j < m; j++){
                    int p =  max(a[bx][by], a[i][j]) - min(a[bx][by], a[i][j]) - 1 - abs(i - bx) - abs(by - j);
                    if(p > ans){
                        x = i;
                        y = j;
                    }
                    ans = max(ans, p);
                }
            if(x == -1)
                break;
            bx = x; by = y;
        }
    }
    cout << ans;
}
 
/*
2 3
3 4 2
5 7 5
 
*/

• Subtask 1: 15 / 15
• Subtask 2: 15 / 15
• Subtask 3: 30 / 30
• Subtask 4: 0 / 40