Submission #1145797

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1145797	2025-02-05 08:20:59	fatman87878	Furniture (JOI20_furniture)	C++20	100 / 100	147 ms	14400 KiB

furniture

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#include<bits/stdc++.h>
using namespace std;
#define IOS cin.tie(nullptr)->sync_with_stdio(0),cin.exceptions(cin.failbit);
#define lb(x) (x)&-(x)
#define all(x) (x).begin(),(x).end()
#define ll long long
constexpr int maxN=1e3+5;
int n,m,Q,cnt[maxN+maxN],c[maxN][maxN],in[maxN][maxN],out[maxN][maxN];
queue<pair<int,int>> q;
inline bool chk(int x,int y){
    if(x>n||x<1||y>m||y<1||c[x][y])return 0;
    return 1;
}
inline void push(){
    for(int x,y;!q.empty();){
        tie(x,y) = q.front(),q.pop();
        cnt[x+y]--;
        if(chk(x-1,y)&&!(--out[x-1][y]))q.emplace(x-1,y),c[x-1][y]=1;
        if(chk(x,y-1)&&!(--out[x][y-1]))q.emplace(x,y-1),c[x][y-1]=1;
        if(chk(x+1,y)&&!(--in[x+1][y]))q.emplace(x+1,y),c[x+1][y]=1;
        if(chk(x,y+1)&&!(--in[x][y+1]))q.emplace(x,y+1),c[x][y+1]=1;
    }
}
int main(){
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 95 / 95