Submission #1174454

#	Time	Username	Problem	Language	Result	Execution time	Memory
1174454		browntoad	Maxcomp (info1cup18_maxcomp)	C++20	0 / 100	1 ms	324 KiB

maxcomp

#include <bits/stdc++.h>
using namespace std;
#define ll long long
// #define int ll
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define REP(i, n) FOR(i, 0, n)
#define REP1(i, n) FOR(i, 1, n+1)
#define RREP(i, n) for (int i = (n)-1; i >= 0; i--)
#define pii pair<int, int>
#define pip pair<int, pii>
#define f first
#define s second
#define pb push_back
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) (int)((x).size())

#ifdef TOAD
#define IOS() ios::sync_with_stdio(false), cin.tie(0), cout.tie(0)
#else
#define IOS() ios::sync_with_stdio(false), cin.tie(0), cout.tie(0)
#endif // TOAD

const ll maxn = 1e3+5;
const int iinf = 1e9+5;

int n, m;
int arr[maxn][maxn];
vector<int> dx = {1, 1, -1, -1};
vector<int> dy = {-1, 1, -1, 1};
signed main(){
    IOS();
    cin>>n>>m;
    int ans = -1;
    vector<pip> pus;
    REP(i, n){
        REP(j, m){
            cin>>arr[i][j];
            pus.pb({arr[i][j], {i, j}});
        }
    }
    sort(ALL(pus));

    vector<int> mn(4);
    REP(i, 4) mn[i] = iinf;

    for (auto pp:pus){
        REP(i, 4){
            mn[i] = min(mn[i], pp.f + dx[i] * pp.s.f + dy[i] * pp.s.s);
        }
        int mox = -iinf;
        REP(i, 4){
            mox = max(mox, -mn[i] + pp.f + dx[i] * pp.s.f + dy[i] * pp.s.s - 1);
        }
        ans = max(ans, mox);
    }
    cout<<ans<<endl;
}
/*
2 3
2 4 3
5 7 5
*/

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