Submission #683910

#	Time	Username	Problem	Language	Result	Execution time	Memory
683910		victor_gao	Furniture (JOI20_furniture)	C++17	5 / 100	5061 ms	24220 KiB

furniture

#pragma GCC optimize("Ofast,unroll-loops,O3")
#pragma GCC optimize("avx,avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,fma,tune=native")
#include<bits/stdc++.h>
//#include<bits/extc++.h>
//#pragma pack(1)
#define fast ios::sync_with_stdio(0); cin.tie(0);
#define pii pair<int,int>
#define x first
#define y second
#define N 1015
using namespace std;
//using namespace __gnu_pbds;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//typedef tree<int, null_type,less_equal<int>, rb_tree_tag,tree_order_statistics_node_update> order_multiset;
//typedef tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update> order_set;
int g[2*N];
int n,m,arr[N][N],in[N][N],out[N][N];
bool vis[N][N];
bool check(int x,int y){
    arr[x][y]=1;
    if (vis[x][y]) return 1;
    vector<pii>path;
    queue<pii>q; q.push({x,y});
    vis[x][y]=1;
    bool ok=1;
    while (!q.empty()){
        pii np=q.front(); q.pop();
        g[np.x+np.y]--;
        if (g[np.x+np.y]==0) ok=0;
        path.push_back(np);
        if (np.x+1<=n&&!vis[np.x+1][np.y]){
            in[np.x+1][np.y]--;
            if (!in[np.x+1][np.y]){
                q.push({np.x+1,np.y});
                vis[np.x+1][np.y]=1;
            }
        }
        if (np.y+1<=m&&!vis[np.x][np.y+1]){
            in[np.x][np.y+1]--;
            if (!in[np.x][np.y+1]){
                q.push({np.x,np.y+1});
                vis[np.x][np.y+1]=1;
            }
        }
    }
    if (ok) return ok;
    else {
        arr[x][y]=0;
        for (auto i:path){
            vis[i.x][i.y]=0;
            g[i.x+i.y]++;
        }
        for (auto [i,j]:path){
            if (j+1<=m&&arr[i][j+1]==0&&!vis[i][j+1])
                in[i][j+1]++;
            if (i+1<=n&&arr[i+1][j]==0&&!vis[i+1][j])
                in[i+1][j]++;
        }
        return 0;
    }
}
signed main(){
    fast
    cin>>n>>m;
    for (int i=1;i<=n;i++){
        for (int j=1;j<=m;j++){
            cin>>arr[i][j];
            g[i+j]++;
        }
    }
    for (int i=1;i<=n;i++){
        for (int j=1;j<=m;j++){
            if (j+1<=m)
                in[i][j+1]++;
            if (i+1<=n)
                in[i+1][j]++;
        }
    }
    for (int i=1;i<=n;i++){
        for (int j=1;j<=m;j++){
            if (arr[i][j])
                check(i,j);
        }
    }
    int q; cin>>q;
    while (q--){
        int x,y; cin>>x>>y;
        /*
        for (int i=1;i<=n;i++){
            for (int j=1;j<=m;j++){
                cout<<vis[i][j];
            }
            cout<<'\n';
        }
        cout<<'\n';
        for (int i=1;i<=n;i++){
            for (int j=1;j<=m;j++){
                cout<<in[i][j]<<" ";
            }
            cout<<'\n';
        }
        cout<<'\n';
        */
        int ans=check(x,y);
        cout<<ans<<'\n';
    }
}

Compilation message (stderr)

furniture.cpp:2:88: warning: bad option '-favx' to pragma 'optimize' [-Wpragmas]
    2 | #pragma GCC optimize("avx,avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,fma,tune=native")
      |                                                                                        ^
furniture.cpp:2:88: warning: bad option '-favx2' to pragma 'optimize' [-Wpragmas]
furniture.cpp:2:88: warning: bad option '-fsse' to pragma 'optimize' [-Wpragmas]
furniture.cpp:2:88: warning: bad option '-fsse2' to pragma 'optimize' [-Wpragmas]
furniture.cpp:2:88: warning: bad option '-fsse3' to pragma 'optimize' [-Wpragmas]
furniture.cpp:2:88: warning: bad option '-fssse3' to pragma 'optimize' [-Wpragmas]
furniture.cpp:2:88: warning: bad option '-fsse4' to pragma 'optimize' [-Wpragmas]
furniture.cpp:2:88: warning: bad option '-fpopcnt' to pragma 'optimize' [-Wpragmas]
furniture.cpp:2:88: warning: bad option '-fabm' to pragma 'optimize' [-Wpragmas]
furniture.cpp:2:88: warning: bad option '-fmmx' to pragma 'optimize' [-Wpragmas]
furniture.cpp:2:88: warning: bad option '-ffma' to pragma 'optimize' [-Wpragmas]
furniture.cpp:2:88: warning: bad option '-ftune=native' to pragma 'optimize' [-Wpragmas]
furniture.cpp:19:23: warning: bad option '-favx' to attribute 'optimize' [-Wattributes]
   19 | bool check(int x,int y){
      |                       ^
furniture.cpp:19:23: warning: bad option '-favx2' to attribute 'optimize' [-Wattributes]
furniture.cpp:19:23: warning: bad option '-fsse' to attribute 'optimize' [-Wattributes]
furniture.cpp:19:23: warning: bad option '-fsse2' to attribute 'optimize' [-Wattributes]
furniture.cpp:19:23: warning: bad option '-fsse3' to attribute 'optimize' [-Wattributes]
furniture.cpp:19:23: warning: bad option '-fssse3' to attribute 'optimize' [-Wattributes]
furniture.cpp:19:23: warning: bad option '-fsse4' to attribute 'optimize' [-Wattributes]
furniture.cpp:19:23: warning: bad option '-fpopcnt' to attribute 'optimize' [-Wattributes]
furniture.cpp:19:23: warning: bad option '-fabm' to attribute 'optimize' [-Wattributes]
furniture.cpp:19:23: warning: bad option '-fmmx' to attribute 'optimize' [-Wattributes]
furniture.cpp:19:23: warning: bad option '-ffma' to attribute 'optimize' [-Wattributes]
furniture.cpp:19:23: warning: bad option '-ftune=native' to attribute 'optimize' [-Wattributes]
furniture.cpp:62:13: warning: bad option '-favx' to attribute 'optimize' [-Wattributes]
   62 | signed main(){
      |             ^
furniture.cpp:62:13: warning: bad option '-favx2' to attribute 'optimize' [-Wattributes]
furniture.cpp:62:13: warning: bad option '-fsse' to attribute 'optimize' [-Wattributes]
furniture.cpp:62:13: warning: bad option '-fsse2' to attribute 'optimize' [-Wattributes]
furniture.cpp:62:13: warning: bad option '-fsse3' to attribute 'optimize' [-Wattributes]
furniture.cpp:62:13: warning: bad option '-fssse3' to attribute 'optimize' [-Wattributes]
furniture.cpp:62:13: warning: bad option '-fsse4' to attribute 'optimize' [-Wattributes]
furniture.cpp:62:13: warning: bad option '-fpopcnt' to attribute 'optimize' [-Wattributes]
furniture.cpp:62:13: warning: bad option '-fabm' to attribute 'optimize' [-Wattributes]
furniture.cpp:62:13: warning: bad option '-fmmx' to attribute 'optimize' [-Wattributes]
furniture.cpp:62:13: warning: bad option '-ffma' to attribute 'optimize' [-Wattributes]
furniture.cpp:62:13: warning: bad option '-ftune=native' to attribute 'optimize' [-Wattributes]

• Subtask 1: 5 / 5
• Subtask 2: 0 / 95