Submission #494827

#	Time	Username	Problem	Language	Result	Execution time	Memory
494827		niloyroot	Ispit (COCI19_ispit)	C++14	90 / 90	10 ms	912 KiB

Main

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<ll>;
using pl = pair<ll,ll>;
#define pb push_back
#define form(m,it) for(auto it=m.begin(); it!=m.end(); it++)
#define forp(i,a,b) for(ll i=a; i<=b; i++)
#define forn(i,a,b) for(ll i=a; i>=b; i--)
#define newl '\n'
#define ff first
#define ss second
const ll mod = 1e9 + 7;

void solve(){
    ll n,k; cin>>n>>k;
    char a[n+1][n+1];
    forp(i,1,n){
        forp(j,1,n){
            cin>>a[i][j];
        }
    }
    ll cnt[26][n+1];
    memset(cnt,0,sizeof(cnt));
    forp(i,1,n){
        forp(j,1,n){
            cnt[a[i][j]-'a'][i]++;
        }
    }

    ll start,end;
    bool g;
    forp(i,1,n){
        forp(j,i+1,n){
            // i and j are two columns u wanna check are possible to make equal or not
            start=0; end=0;
            forp(l,1,n){
                if(a[i][l]!=a[j][l]){
                    start=l;
                    break;
                }
            }
            forn(l,n,1){
                if(a[i][l]!=a[j][l]){
                    end=l;
                    break;
                }
            }
            g=1;
            forp(l,0,25){
                if(cnt[l][i]!=cnt[l][j]){
                    g=0;
                }
            }
            if(end-start+1<=k && g){
                cout<<"DA"<<newl; return;
            }
        }
    }

    cout<<"NE"<<newl;
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t=1; //cin>>t;
    while(t--)solve();
}

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 9 / 9
• Subtask 7: 9 / 9
• Subtask 8: 9 / 9
• Subtask 9: 9 / 9
• Subtask 10: 9 / 9