90pts求调
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90pts求调
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十八子楼主2022/10/3 23:18
#include <bits/stdc++.h>
using namespace std;
int xx[] = {1,-1,0,0,1,-1,1,-1};
int yy[] = {0,0,1,-1,1,-1,-1,1};
int hei[1005][1005];
int vis[1005][1005];
// int reg[1001][1001];
int n;
int bfs(int x,int y,int opt){
    int cnt=1;
    if(vis[x][y]==1 or x>n or y>n or x<1 or y<1)return 0;
    vis[x][y]=1;
    if(opt==1){
        for(int i=0;i<=7;i++){
            int dx = xx[i],dy = yy[i];
            if(x+dx>n or y+dy>n or x+dx<1 or y+dy<1)continue;
            if(hei[x+dx][y+dy]>hei[x][y])return -1;
        }
    }else{
        for(int i=0;i<=7;i++){
            int dx = xx[i],dy = yy[i];
            if(x+dx>n or y+dy>n or x+dx<1 or y+dy<1)continue;
            if(hei[x+dx][y+dy]<hei[x][y])return -1;
        }
    }
    for(int i=0;i<=7;i++){
        if(hei[x+xx[i]][y+yy[i]]==hei[x][y]){
            int tmp = bfs(x+xx[i],y+yy[i],opt);
            if(tmp == -1){
                return -1;
            }else{
                cnt+=tmp;
            }
        }
    }
    return cnt;
}

int main(){
    cin>>n;
    int f = 0,g = 0;
    memset(vis,0,sizeof(vis));
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++){
            cin>>hei[i][j];
        }
    }
    int cnt = 0;
    for(int i=1;i<=n;i++){  
        for(int j=1;j<=n;j++){
            int tmp =bfs(i,j,1);     //1山峰,2山谷
            if(tmp!=0 and tmp!=-1){f++;}
        }
    }
    memset(vis,0,sizeof(vis));      //多测记得清空
    cnt = 0;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++){
            int tmp =bfs(i,j,2);
            if(tmp!=0 and tmp!=-1){g++;}
        }
    }
    // for(int i=1;i<=n;i++){
    //     for(int j=1;j<=n;j++){
    //         if(reg[i][j]==1){
    //             cout<<"f"<<" ";
    //         }else if(reg[i][j]==2){
    //             cout<<"g"<<" ";
    //         }else{
    //             cout<<hei[i][j]<<" ";
    //         }
    //     }
    //     cout<<endl;
    // }
    cout<<f<<" "<<g<<endl;
}
2022/10/3 23:18
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