Submission #704990

#	Time	Username	Problem	Language	Result	Execution time	Memory
704990		1075508020060209tc	Selotejp (COCI20_selotejp)	C++14	70 / 110	1044 ms	24784 KiB

Main

//#pragma GCC optimize("O3")
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define X first
#define Y second
int n;int m;
string tgr[1010];
int dp[1010][3010];
int gr[1010];
int col[3010];
int sme[3010][3010];
int bts[3010];

signed main(){

cin>>n>>m;
for(int i=1;i<=n;i++){
    cin>>tgr[i];
}
for(int i=1;i<=n;i++){
    for(int j=0;j<m;j++){
        if(tgr[i][j]=='#'){
            gr[i]+=(1<<j);
        }
    }
}

for(int i=0;i<(1<<m);i++){
    for(int j=0;j<m;j++){
        if( ((i&(1<<j))!=0) ){
            col[i]++;
            if(j>0&&((i&(1<<(j-1)))!=0)){
                col[i]--;
            }
            bts[i]++;
        }
    }
}
for(int a=0;a<(1<<m);a++){
    for(int b=0;b<(1<<m);b++){
        for(int j=0;j<m;j++){
            if( ((a&(1<<j))!=0)&&((b&(1<<j))!=0) ){
                sme[a][b]++;
            }
        }
    }
}


for(int i=0;i<=n+1;i++){
    for(int j=0;j<(1<<m)+10;j++){
        dp[i][j]=1e9;
    }
}
dp[0][0]=0;

for(int i=1;i<=n+1;i++){
    for(int mask=0;mask<(1<<m);mask++){
        if(((mask|gr[i])!=gr[i])){continue;}
        for(int mskb=0;mskb<(1<<m);mskb++){
            dp[i][mask]=min(dp[i][mask],dp[i-1][mskb]+bts[mask]-sme[mask][mskb]+col[gr[i]^mask]);
        }
    }
}
cout<<dp[n+1][0]<<endl;




}

• Subtask 1: 35 / 35
• Subtask 2: 35 / 35
• Subtask 3: 0 / 40