oj.uz

Submission #493009

# Submission time Handle Problem Language Result Execution time Memory
493009 2021-12-10T02:25:32 Z irmuun Red-blue table (IZhO19_stones) C++17
17 / 100
 2000 ms 1100 KB 
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define ll long long
#define ff first
#define ss second
#define PI 3.14159265359
ll n,m,t,p[1001][1001],h[1001][1001],a,b,c,d,e,f,i,j,k,mod=1000000007,mod1=998244353,MAX=1e18;
string s,u;
ll df[101];
vector<pair<ll,ll> >v;
vector<ll>dv[101];
void dfs(ll x){
    df[x]=1;
    for(ll i=0;i<dv[x].size();i++){
        if(df[dv[x][i]]==0){
            dfs(dv[x][i]);
        }
    }
}
ll fastPow(ll a,ll b){
    ll d=1;
    while(b>0){
        if(b%2==1){
            d=d*a%mod;
        }
        b/=2;
        a=a*a%mod;
    }
    return d;
}
ll check(){
	ll r=0;
	ll b=0;
	ll ans=0;
	for(ll i=1;i<=n;i++){
		r=0;
		b=0;
		for(ll j=1;j<=m;j++){
			if(p[i][j]==1){
				r++;
			}
			else{
				b++;
			}
		}
		if(r>b){
			ans++;
		}
	}
	for(ll i=1;i<=m;i++){
		r=0;
		b=0;
		for(ll j=1;j<=n;j++){
			if(p[j][i]==1){
				r++;
			}
			else{
				b++;
			}
		}
		if(b>r){
			ans++;
		}
	}
	return ans;
}
int main(){
	cin>>t;
	while(t--){
		cin>>n>>m;
		a=fastPow(2,n*m);
		for(i=1;i<=n;i++){
			for(j=1;j<=m;j++){
				v.pb({i,j});
			}
		}
		ll ans=0;
		for(i=0;i<a;i++){
			d=i;
			for(j=0;j<n*m;j++){
				p[v[j].ff][v[j].ss]=d%2;
				d/=2;
			}
			f=check();
			if(ans<f){
				ans=f;
				for(j=1;j<=n;j++){
					for(k=1;k<=m;k++){
						h[j][k]=p[j][k];
					}
				}
			}
		}
		cout<<ans<<endl;
		for(i=1;i<=n;i++){
			for(j=1;j<=m;j++){
				if(h[i][j]==1){
					cout<<'+';
				}
				else{
					cout<<'-';
				}
			}
			cout<<endl;
		}
		v.clear();
	}
}

Compilation message

stones.cpp: In function 'void dfs(long long int)':
stones.cpp:15:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for(ll i=0;i<dv[x].size();i++){
      |                ~^~~~~~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 13 ms 332 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2079 ms 332 KB Time limit exceeded

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 13 ms 332 KB Output is correct
3 Execution timed out 2079 ms 332 KB Time limit exceeded

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2069 ms 1100 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2069 ms 528 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 13 ms 332 KB Output is correct
3 Execution timed out 2079 ms 332 KB Time limit exceeded