Submission #1166616

#	Time	Username	Problem	Language	Result	Execution time	Memory
1166616		8pete8	Maxcomp (info1cup18_maxcomp)	C++20	15 / 100	0 ms	332 KiB

maxcomp

#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<cassert>
#include<unordered_map>
#include <queue>
#include <cstdint>
#include<cstring>
#include<limits.h>
#include<cmath>
#include<set>
#include<algorithm>
#include <iomanip>
#include<numeric>
#include<bitset>
using namespace std;
#define ll long long
#define f first
#define s second
#define pii pair<int,int>
#define ppii pair<int,pii>
#define vi vector<int>
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define F(n) for(int i=0;i<n;i++)
#define lb lower_bound
#define ub upper_bound
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
#pragma GCC optimize ("03,unroll-lopps")
#define sz(x) (int)((x).size())
#define int long long
using namespace std;
const int mod=1e9+7,mxn=1e3+5,inf=1e18,minf=-1e18,lg=30;
//#undef int
int n,k,m,d,q;
void setIO(string name){
	ios_base::sync_with_stdio(0); cin.tie(0);		
	freopen((name+".in").c_str(),"r",stdin);		
	freopen((name+".out").c_str(),"w",stdout);	
}
int A[mxn+10][mxn+10],val[mxn+10][mxn+10];
int32_t main(){
    fastio		
	cin>>n>>m;
	for(int i=1;i<=n;i++)for(int j=1;j<=m;j++)cin>>A[i][j];
	int ans=0;
	for(int i=0;i<=n+1;i++)for(int j=0;j<=m+1;j++)val[i][j]=inf;		
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			val[i][j]=min(val[i-1][j],val[i][j-1]);
			ans=max(ans,A[i][j]-i-j-val[i][j]);
			val[i][j]=min(val[i][j],A[i][j]-i-j);
		}
	}
	for(int i=0;i<=n+1;i++)for(int j=0;j<=m+1;j++)val[i][j]=inf;		
	for(int i=n;i>=1;i--){
		for(int j=m;j>=1;j--){
			val[i][j]=min(val[i+1][j],val[i][j+1]);	
			ans=max(ans,A[i][j]+i+j-val[i][j]);
			val[i][j]=min(val[i][j],A[i][j]+i+j);
		}
	}
	cout<<ans-1;
}
/*
*/

Compilation message (stderr)

maxcomp.cpp:32:40: warning: bad option '-funroll-lopps' to pragma 'optimize' [-Wpragmas]
   32 | #pragma GCC optimize ("03,unroll-lopps")
      |                                        ^
maxcomp.cpp:39:23: warning: bad option '-funroll-lopps' to attribute 'optimize' [-Wattributes]
   39 | void setIO(string name){
      |                       ^
maxcomp.cpp:45:14: warning: bad option '-funroll-lopps' to attribute 'optimize' [-Wattributes]
   45 | int32_t main(){
      |              ^
maxcomp.cpp: In function 'void setIO(std::string)':
maxcomp.cpp:41:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |         freopen((name+".in").c_str(),"r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
maxcomp.cpp:42:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |         freopen((name+".out").c_str(),"w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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