Submission #157068

#	Time	Username	Problem	Language	Result	Execution time	Memory
157068		AKaan37	Red-blue table (IZhO19_stones)	C++17	11 / 100	498 ms	35348 KiB

stones

//Sani buyuk Osman Pasa Plevneden cikmam diyor.
//FatihSultanMehmedHan
//Abdulhamid Han
//Bismillahirrahmanirrahim
//█▀█─█──█──█▀█─█─█
//█▄█─█──█──█▄█─█▄█
//█─█─█▄─█▄─█─█─█─█
 
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
 
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long lo;
typedef pair< lo,lo > PII;
 
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)
 
const lo MAX = -1000000000000000000;
const lo MIN = 1000000000000000000;
const lo inf = 1000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 500005;
const lo mod = 1000000007;
 
int n,m,b[li],a[li],k,flag,t;
int cev;
string s;
map<int,int> vis[1005];
vector<int> v;
 
int main(void){
	scanf("%d",&t);
	while(t--){
		cev=0;
		int cevap=0;
		scanf("%d %d",&n,&m);
		FOR vis[i].clear();
		if(n>m){
			int at=(m+2)/2;
			int son=1;
			int yes=0;
			if(m%2==0 && m!=1 && n!=1)yes=1;
			if(m%2==1 && m!=1 && n!=1)yes=2;
			
			for(int i=yes;i<=n;i++){
				if(i%2==0){
					son=1;
					while(son<=at){vis[i][son]=1;son++;}
				}
				else{
					son=m-at+1;
					while(son<=m){vis[i][son]=1;son++;}
				}
			}
			
			for(int j=1;j<=m;j++){
				cev=0;
				FOR{
					if(vis[i][j]==0)cev++;
				}
				if(cev>n/2)cevap++;
			}
			for(int j=1;j<=n;j++){
				cev=0;
				for(int i=1;i<=m;i++){
					if(vis[j][i]==1)cev++;
				}
				//~ cout<<cev<<"**\n"<<endl;
				if(cev>m/2)cevap++;
			}
			printf("%d\n",cevap);
			for(int i=1;i<=n;i++){
				for(int j=1;j<=m;j++){
					if(vis[i][j]==1)printf("+");
					else printf("-");
				}
				printf("\n");
			}
		}
		else{
			int at=(n+2)/2;
			int son=1;
			int yes=0;
			if(n%2==0 && m!=1 && n!=1)yes=1;
			if(n%2==1 && m!=1 && n!=1)yes=2;
			for(int j=yes;j<=m;j++){
				if(j%2==0){
					son=1;
					while(son<=at){vis[son][j]=1;son++;}
				}
				else{
					son=n-at+1;
					while(son<=n){vis[son][j]=1;son++;}
				}
			}
			for(int j=1;j<=m;j++){
				cev=0;
				FOR{
					if(vis[i][j]==1)cev++;
				}
				if(cev>n/2)cevap++;
			}
			for(int j=1;j<=n;j++){
				cev=0;
				for(int i=1;i<=m;i++){
					if(vis[j][i]==0)cev++;
				}
				if(cev>m/2)cevap++;
			}
			printf("%d\n",cevap);
			for(int i=1;i<=n;i++){
				for(int j=1;j<=m;j++){
					if(vis[i][j]==1)printf("-");
					else printf("+");
				}
				printf("\n");
			}
		}
	}
	return 0;
}

Compilation message (stderr)

stones.cpp: In function 'int main()':
stones.cpp:43:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&t);
  ~~~~~^~~~~~~~~
stones.cpp:47:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&n,&m);
   ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 0 / 17
• Subtask 2: 0 / 10
• Subtask 3: 0 / 16
• Subtask 4: 11 / 11
• Subtask 5: 0 / 15
• Subtask 6: 0 / 31