제출 #37649

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
37649		Kerim	Bomb (IZhO17_bomb)	C++14	31 / 100	1000 ms	8172 KiB

bomb

#include "bits/stdc++.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int N=2509;
char arr[N][N];
bool vis[101][101];
int main(){
    //~ freopen("file.in", "r", stdin);
    int n,m;
    scanf("%d%d",&n,&m);
    for(int i=1;i<=n;i++)
		for(int j=1;j<=m;j++)
			scanf(" %c",&arr[i][j]);
	if(n<=100 and m<=100){
		int ans=0;		
		for(int x=1;x<=n;x++)
			for(int y=1;y<=m;y++){
				memset(vis,0,sizeof vis);
				for(int i=1;i+x-1<=n;i++)
					for(int j=1;j+y-1<=m;j++){
						bool ok=1;
						for(int i1=i;i1<=i+x-1;i1++)
							for(int j1=j;j1<=j+y-1;j1++)
								if(arr[i1][j1]=='0')
									ok=0;
						if(ok){
							for(int i1=i;i1<=i+x-1;i1++)
								for(int j1=j;j1<=j+y-1;j1++)
									vis[i1][j1]=1;
						}
					}
				bool ok=1;	
				for(int i=1;i<=n;i++)
					for(int j=1;j<=m;j++)
						if(!vis[i][j] and arr[i][j]=='1')
							ok=0;
				if(ok)			
					umax(ans,x*y);
		}
		printf("%d\n",ans);
		return 0;
	}		
	int xx=INF,yy=INF;		
	for(int i=1;i<=n;i++){
		int cnt=0;
		for(int j=1;j<=m;j++){
			if(arr[i][j]=='0'){
				if(cnt)
					umin(yy,cnt);
				cnt=0;	
			}
			else
				cnt++;
		}
		if(cnt)
			umin(yy,cnt);
	}	
	for(int j=1;j<=m;j++){
		int cnt=0;
		for(int i=1;i<=n;i++){
			if(arr[i][j]=='0'){
				if(cnt)
					umin(xx,cnt);
				cnt=0;	
			}
			else
				cnt++;
		}
		if(cnt)
			umin(xx,cnt);
	}
	if(xx==INF)
		xx=n;
	printf("%d\n",xx*yy);
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

bomb.cpp: In function 'int main()':
bomb.cpp:26:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
                        ^
bomb.cpp:29:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf(" %c",&arr[i][j]);
                           ^

• Subtask 1: 31 / 100