제출 #340823

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
340823		David_M	Red-blue table (IZhO19_stones)	C++14	100 / 100	46 ms	3308 KiB

stones

#include <bits/stdc++.h> 
#define ll long long
#define pb push_back
#define F first
#define S second
using namespace std;
const ll N=1000006;
int n, m, q, o, u, e, l, M;
string x, y, a[1010];
 
int main(){ios_base::sync_with_stdio(false), cin.tie(0);
	cin>>q;
	for (int i=0; i<1001; i++)for (int j=0; j<1001; j++)a[i]+='-';
	while(q--){x="";o=u=0;
		cin>>n>>m;		
		if(n==1){cout<<m<<endl;while(m--)cout<<'-';cout<<'\n';continue;}
		if(m==1){cout<<n<<endl;while(n--)cout<<"+\n";continue;}
		if(n==2){cout<<m<<endl;M=m;while(m--)cout<<'-';cout<<'\n';m=M;while(m--)cout<<'-';cout<<'\n';continue;}
		if(m==2){cout<<n<<endl;while(n--)cout<<"++\n";continue;}
		if(n==3){cout<<m+1<<endl;M=m;while(m--)cout<<'-';cout<<'\n';m=M;while(m--)cout<<'-';cout<<'\n';m=M;while(m--)cout<<'+';cout<<'\n';continue;}
		if(m==3){cout<<n+1<<endl;while(n--)cout<<"++-\n";continue;}
		if(n==4){cout<<m+1<<endl;M=m;while(m--)cout<<'-';cout<<'\n';m=M;while(m--)cout<<'-';cout<<'\n';m=M;while(m--)cout<<'-';cout<<'\n';m=M;while(m--)cout<<'+';cout<<'\n';continue;}
		if(m==4){cout<<n+1<<endl;while(n--)cout<<"+++-\n";continue;}

		if(n%2==1&&m%2==1){
			if(n==1){cout<<m<<endl;while(m--)cout<<'-';cout<<'\n';continue;}
			if(m==1){cout<<n<<endl;while(n--)cout<<"+\n";continue;}
			
			cout<<n+m-2<<'\n';
			
			for (int i=1; i<=m/2; i++)x+='-';
			for (int i=1; i<=m/2+1; i++)x+='+';
			for (int i=1; i<=n/2; i++)cout<<x<<'\n';
			
			for (int i=0; i<m-1; i++)x[i]='-'; x[m-1]='+';
			cout<<x<<'\n';
			
			x="";
			for (int i=1; i<=m/2; i++)x+='+';
			for (int i=1; i<=m/2; i++)x+='-';
			x+='+';
			for (int i=1; i<=n/2; i++)cout<<x<<'\n';
			continue;
		}
		if(n%2==0&&m%2==0){if(n<m)n--,o=1; else m--,u=1;}
		
		if(n%2==1){e=n/2;
			for(int i=0; i<n; i++)for(int j=0; j<m; j++)a[i][j]='-';
			if(m+4-2*n>=0){l=n-2; for (int i=0; i<m; i++)for (int j=i; j<i+2*e; j+=2)a[min(j%l, n-1)][i]='+';}
			else{
				for (int i=0; i<n/2; i++)for (int j=0; j<m/2-1; j++)a[i][j]='+';
				for (int i=n/2+1; i<n; i++)for (int j=m/2-1; j<m-2; j++)a[i][j]='+';
				for (int i=0; i<n; i++)a[i][m-1]='+';
				for (int i=0; i<n; i++)a[i][m-2]='+';
				l=n-3;
			}
		}else{e=m/2;
			for(int i=0; i<n; i++)for(int j=0; j<m; j++)a[i][j]='+';
			if(n+4-2*m>=0){l=m-2;for (int i=0; i<n; i++)for (int j=i; j<i+2*e; j+=2)a[i][min(j%l, m-1)]='-';}
			else{
				for (int i=0; i<m/2; i++)for (int j=0; j<n/2; j++)a[j][i]='-';
				for (int i=m/2+1; i<m; i++)for (int j=n/2-1; j<n; j++)a[j][i]='-';
				for (int i=0; i<m; i++)a[n-1][i]='-';
				l=m-3;
			}			
		}
		cout<<n*(m%2)+m*(n%2)+l<<endl;
		
		for(int i=0; i<n; i++){for(int j=0; j<m; j++)cout<<a[i][j];if(u)cout<<'+';cout<<'\n';}
		if(o)while(m--)cout<<'-';cout<<'\n';	
	}
 
}

컴파일 시 표준 에러 (stderr) 메시지

stones.cpp: In function 'int main()':
stones.cpp:35:4: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   35 |    for (int i=0; i<m-1; i++)x[i]='-'; x[m-1]='+';
      |    ^~~
stones.cpp:35:39: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   35 |    for (int i=0; i<m-1; i++)x[i]='-'; x[m-1]='+';
      |                                       ^
stones.cpp:70:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   70 |   if(o)while(m--)cout<<'-';cout<<'\n';
      |   ^~
stones.cpp:70:28: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   70 |   if(o)while(m--)cout<<'-';cout<<'\n';
      |                            ^~~~

• Subtask 1: 17 / 17
• Subtask 2: 10 / 10
• Subtask 3: 16 / 16
• Subtask 4: 11 / 11
• Subtask 5: 15 / 15
• Subtask 6: 31 / 31