Submission #508714

#	Time	Username	Problem	Language	Result	Execution time	Memory
508714		David_M	Sajam (COCI18_sajam)	C++17	90 / 90	252 ms	1328 KiB

sajam

#include <bits/stdc++.h>
#define ll long long
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
#define pii pair<int, int>
#define FF first.first
#define FS first.second
#define pb push_back
using namespace std;
const ll N=1000006, INF=1e9, P=998244353;

int q=1, n, m, x, y, c, l, r, k, a[N], f[N], ansl, ansr, ans, o, u, Ans;
string s;
bitset<1000> b[1000];
int xorr(bitset<1000> x, bitset<1000> y){return min((int)(x^y).count(), (int)(n-(x^y).count()));}
int solve(int i){
    int ans=0;
    for (int j=0; j<n; j++)ans+=xorr(b[i],b[j]);
    return ans;
}
main(){ios_base::sync_with_stdio(false), cin.tie(0);

	cin>>n>>k;
    Ans=INF;
    for (int i=0; i<n; i++){
        cin>>s;
        int j=0;
        for(auto c:s)b[i][j++]=(c=='x');
    }
    for (int i=0; i<n; i++)Ans=min(solve(i), Ans);
    if(k==n){
        for (int i=0; i<n; i++){
            b[0][i].flip();
            Ans=min(solve(0)+1, Ans);
            b[0][i].flip();
        }
    }

	puts((Ans<=k) ? "DA":"NE");

}
/*
3 2
xxo
xox
oxx
*/

Compilation message (stderr)

sajam.cpp:22:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   22 | main(){ios_base::sync_with_stdio(false), cin.tie(0);
      | ^~~~

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