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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#191215#6309. Aqreucup-team870#WA 12ms3604kbC++173.1kb2023-09-29 20:33:562023-09-29 20:33:57

Judging History

你现在查看的是最新测评结果

  • [2023-09-29 20:33:57]
  • 评测
  • 测评结果:WA
  • 用时:12ms
  • 内存:3604kb
  • [2023-09-29 20:33:56]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define IOS {cin.tie(0);cout.tie(0);ios::sync_with_stdio(0);}
#define rep(i,j,k) for(int i=j;i<=k;++i)
#define per(i,j,k) for(int i=j;i>=k;--i)
#define P pair<int,int>
#define ll long long
#define vi vector<int>
vi f[100]; int cnt;
const int NM=1e6+6;
const P dir[]={{-1,0},{1,0},{0,1},{0,-1}};
int fa[NM];
int fd(int x){
    if(x==fa[x])return x;
    return fa[x]=fd(fa[x]);
}
void slv(){
    int n,m;cin>>n>>m;
    if(n<4 && m<4){
        cout<<n*m<<'\n';
        rep(i,1,n){
            rep(j,1,m)cout<<1; cout<<'\n';
        }
        return;
    }
    if(n==2 || m==2){
        vector<vi>res;
        int fl=0;
        if(m==2)fl=1,swap(n,m);
        res.resize(n+1);
        rep(i,1,n)res[i].resize(m+1);
        rep(j,1,m)res[1][j]=(j%4!=2);
        rep(j,1,m)res[2][j]=(j%4!=0);
        int num=0;
        rep(i,1,n)rep(j,1,m)num+=res[i][j];
        cout<<num<<'\n';
        if(fl){
            rep(j,1,m){
                rep(i,1,n)cout<<res[i][j]; cout<<'\n';
            }
        }
        else{
            rep(i,1,n){
                rep(j,1,m)cout<<res[i][j]; cout<<'\n';
            }
        }
        return;
    }
    vector<vi>res(n+1);
    rep(i,1,n)res[i].resize(m+1);
    auto inok=[&](int x,int y){
        return 1<=x && x<=n && 1<=y && y<=m;
    };
    auto cal=[&](int i,int j){
        return (i-1)*m+j;
    };
    auto ck=[&](int cnt){ //cnt个1
        // cout<<cnt<<endl;
        // return true;
        rep(i,1,n*m)fa[i]=i;
        rep(i,1,n){
            rep(j,1,m){
                // cout<<res[i][j];
                if(!res[i][j])continue;
                rep(k,0,3){
                    int ii=i+dir[k].first,jj=j+dir[k].second;
                    if(inok(ii,jj) && res[ii][jj]){
                        int u=cal(i,j),v=cal(ii,jj);
                        u=fd(u),v=fd(v);
                        if(u!=v)--cnt,fa[u]=v;
                    }
                }
            }
            // cout<<'\n';
        }
        return cnt==1;
    };
    int mi=1e9,ans;
    rep(i,1,cnt){
        int num=0;
        rep(x,1,n){
            rep(y,1,m){
                if(f[i][(x-1)%4]%4==y%4)++num,res[x][y]=0;
                else res[x][y]=1;
            }
        }
        if(ck(n*m-num) && num<mi){
            mi=num; ans=i;
        }
    }
    cout<<n*m-mi<<'\n'; //assert(mi==n*m/4);
    rep(x,1,n){
        rep(y,1,m)cout<<int(f[ans][(x-1)%4]%4!=y%4);
        cout<<'\n';
    }
}
void ck(vi q){
    map<int,int>mp;
    for(auto i:q)mp[i]=1;
    if(mp.size()<4)return;
    mp.clear();
    rep(i,0,3)mp[(i+q[i])%4]=1;
    if(mp.size()==1)return;
    mp.clear();
    rep(i,0,3)mp[(i-q[i]+4)%4]=1;
    if(mp.size()==1)return;
    f[++cnt]=q; 
}
signed main(){
    // IOS
    rep(i1,1,4){
        rep(i2,1,4){
            rep(i3,1,4){
                rep(i4,1,4){
                    ck(vector<int>({i1,i2,i3,i4}));
                }
            }
        }
    }
    // rep(i,1,cnt){
    //     for(auto v:f[i])cout<<v<<' '; cout<<'\n';
    // }
    // return 0;
    int T;cin>>T;
    while(T--)slv();
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 3604kb

input:

3
2 2
3 4
3 8

output:

4
11
11
9
0111
1011
1110
18
01110111
10111011
11101110

result:

ok ok (3 test cases)

Test #2:

score: -100
Wrong Answer
time: 12ms
memory: 3496kb

input:

361
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 17
2 18
2 19
2 20
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
3 10
3 11
3 12
3 13
3 14
3 15
3 16
3 17
3 18
3 19
3 20
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
4 10
4 11
4 12
4 13
4 14
4 15
4 16
4 17
4 18
4 19
4 20
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
5 1...

output:

4
11
11
6
111
111
6
1011
1110
8
10111
11101
9
101110
111011
11
1011101
1110111
12
10111011
11101110
14
101110111
111011101
15
1011101110
1110111011
17
10111011101
11101110111
18
101110111011
111011101110
20
1011101110111
1110111011101
21
10111011101110
11101110111011
23
101110111011101
1110111011101...

result:

wrong answer ans finds a larger answer (test case 25)