Submission #702413

#	Time	Username	Problem	Language	Result	Execution time	Memory
702413		chenyan	Sajam (COCI18_sajam)	C++17	90 / 90	16 ms	1236 KiB

sajam

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
#define pb emplace_back
#define N 200010
int cnt[N];
signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n,i,k,j;
	cin>>n>>k;
	string s;
	for(j=0;j<n;j++){
		cin>>s;
		int r1=0,r2=0,r=0;
		for(i=0;i<n;i++){
			int x=(s[i]=='o'?1:0);
			r1+=min(j-cnt[i]-x,cnt[i]+x);
			r2+=min(j-cnt[i]-(x^1),cnt[i]+(x^1));
		}
		if(r1>r2)r=1;
		for(i=0;i<n;i++){
			int x=(s[i]=='o'?1:0)^r;
			cnt[i]+=x;
		}
	}
	int ans=0;
	for(i=0;i<n;i++)ans+=min(n-cnt[i],cnt[i]);
	cout<<(ans<=k?"DA":"NE")<<'\n';
}

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