Submission #892834

#	Time	Username	Problem	Language	Result	Execution time	Memory
892834		vjudge1	Maxcomp (info1cup18_maxcomp)	C++17	60 / 100	1038 ms	16756 KiB

maxcomp

#include "bits/stdc++.h"
using namespace std;       

#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")

using ll = long long;
using ld = long double;
#define pb push_back
#define ff first
#define ss second
#define sz(x) (ll)(x).size()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()

void freopen(string s) { freopen((s+".in").c_str(), "r", stdin); freopen((s+".out").c_str(), "w", stdout); }
void IOIGold2024_InshAllah() { ios_base::sync_with_stdio(false); cin.tie(NULL); }
ll binmul(ll a, ll b, ll c) { ll res = 0; while(b) { if(b&1) (res += a) %= c; (a += a) %= c; b >>= 1; } return res; }
ll binpow(ll a, ll b, ll c) { ll res = 1; while(b) { if(b&1) (res *= a) %= c; (a *= a) %= c; b >>= 1; } return res; }
template<typename T> T gcd(T a, T b) { if(b==0) return a; return gcd(b, a%b); }
template<typename T> T lcm(T a, T b) { return a/gcd(a, b)*b; }
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ld rnd() { return rng()%INT_MAX*1.0/INT_MAX; }

const ll inf = 1e18+7, MX = LLONG_MAX, MN = LLONG_MIN;
const ll mod = 1e9+7, N = 1e3+5;
ll a[N][N];

void kigash() {
    ll n, m;
    cin>>n>>m;
    for(ll i=1; i<=n; i++) {
        for(ll j=1; j<=m; j++) cin>>a[i][j];
    }
    ll ans = -5;
    for(ll len=0; len<=n+m; len++) {
        for(ll i=1; i<=n; i++) {
            for(ll j=1; j<=m; j++) {
                ll mx = 0;
                for(ll k=i; k>=max(1ll, i-len); k--) {
                    for(ll l=max(1ll, j-len+i-k); l<=min(m, j+len-i+k); l++) mx = max(mx, a[k][l]);
                }
                for(ll k=i; k<=min(n, i+len); k++) {
                    for(ll l=max(1ll, j-len+k-i); l<=min(m, j+len-k+i); l++) mx = max(mx, a[k][l]);
                }
                ans = max(ans, mx-a[i][j]-len-1);
            }
        }
    }
    cout<<ans<<"\n";
    return;
}

signed main(/*Kigash Amir*/) {
    // freopen("");
    IOIGold2024_InshAllah();
    ll tt = 1;
    // cin>>tt;
    for(ll i=1; i<=tt; i++) {
        kigash();
    }
}

Compilation message (stderr)

maxcomp.cpp:4: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
    4 | #pragma comment(linker, "/stack:200000000")
      | 
maxcomp.cpp: In function 'void freopen(std::string)':
maxcomp.cpp:17:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 | void freopen(string s) { freopen((s+".in").c_str(), "r", stdin); freopen((s+".out").c_str(), "w", stdout); }
      |                          ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
maxcomp.cpp:17:73: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 | void freopen(string s) { freopen((s+".in").c_str(), "r", stdin); freopen((s+".out").c_str(), "w", stdout); }
      |                                                                  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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