Submission #575304

#	Time	Username	Problem	Language	Result	Execution time	Memory
575304		AGE	Sajam (COCI18_sajam)	C++14	90 / 90	1516 ms	2240 KiB

sajam

#include <bits/stdc++.h>
#define int long long
#define F first
#define S second
#define pb push_back

using namespace std;
const int N=1e6,M=3e3+2,mod=1e9+7;
string s[M];

main()
{

    int n,m;
    cin>>n>>m;

    for(int i=0;i<n;i++)
        cin>>s[i];

    for(int i=0;i<n;i++){

        int ans=0;

        for(int j=0;j<n;j++){

            if(i==j)
                continue;

            int cnt=0;

            for(int k=0;k<n;k++)
                cnt+=(s[i][k]!=s[j][k]);

            int cnt2=0;

            for(int k=0;k<n;k++)
                cnt2+=(s[i][k]==s[j][k]);

            ans+=min(cnt,cnt2);
            
            if(ans>m)
                break;

        }
        


        if(ans<=m){

            cout<<"DA"<<endl;
            return 0;

        }
    }

    for(int i=0;i<n;i++){

        if(s[0][i]=='x')
            s[0][i]='o';

        else
            s[0][i]='x';

        int ans=0;

        for(int j=1;j<n;j++){

            int cnt=0;

            for(int k=0;k<n;k++)
                cnt+=(s[0][k]!=s[j][k]);

            int cnt2=0;

            for(int k=0;k<n;k++)
                cnt2+=(s[0][k]==s[j][k]);

            ans+=min(cnt,cnt2);

            if(ans>m)
                break;
        }

        if(s[0][i]=='x')
            s[0][i]='o';

        else
            s[0][i]='x';

        if(ans<=m){

            cout<<"DA"<<endl;
            return 0;

        }

    }

    cout<<"NE"<<endl;
}
///use scanf
///[phone]

/*
8 8
xxxxoooo
xoxoxoxo
xxxxoooo
xoxoxoxo
xxxxoooo
xoxoxoxo
xxxxoooo
xoxoxoxo
*/

Compilation message (stderr)

sajam.cpp:11:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main()
      | ^~~~

• Subtask 1: 15 / 15
• Subtask 2: 15 / 15
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 15 / 15
• Subtask 6: 15 / 15