Submission #96620

#	Time	Username	Problem	Language	Result	Execution time	Memory
96620		heon	Ispit (COCI19_ispit)	C++11	9 / 90	268 ms	35152 KiB

Main

#include<bits/stdc++.h>
 
using namespace std;
 
#define all(x) x.begin(), x.end()
typedef vector <int> vi;
typedef pair<int,int> ii;
typedef long long ll;
 
const int mod = 1e9 + 7;
const ll inf = 3e18 + 5;
 
bool isti[205][205][205][2];
string temp[505][2], s[505];
 
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
 
/*
    #ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    #endif
*/
    int n, k;
    cin >> n >> k;
    for(int i = 0; i < n; i++){
        cin >> s[i];
    }
    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            temp[j][0] += s[j][i];
        }
        for(int j = 0; j < n; j++){
            for(int l = j + 1; l < n; l++){
                isti[i][j][l][0] = (temp[j][0] == temp[l][0]);
            }
        }
    }
    for(int i = n - 1; i >= 0; i--){
        for(int j = 0; j < n; j++){
            temp[j][1] += s[j][i];
        }
        for(int j = 0; j < n; j++){
            for(int l = j + 1; l < n; l++){
                isti[i][j][l][1] = (temp[j][1] == temp[l][1]);
            }
        }        
    }
    for(int i = 0; i <= n - k; i++){
        int cnt[505][26] = {};
        for(int l = 0; l < k; l++){
            for(int j = 0; j < n; j++){
                cnt[l + i][s[j][l + i] - 'a']++;
            }
        }
        for(int x = 0; x < 26; x++){
            bool ok = 1;
            for(int l = 0; l < k; l++){
                ok &= cnt[l + i][x] >= 1;
            }
            if(ok){
                for(int xx = x; xx < 26; xx++){
                    for(int l = 0; l < k; l++){
                        if(xx == x) ok &= cnt[l + i][xx] >= 2;
                        else ok &= cnt[l + i][xx] >= 1; 
                    }
                    if(ok){
                        bool lijevo = true, desno = true;
                        if(i){
                            lijevo = false;
                            for(int z = 0; z < n; z++){
                                for(int y = z + 1; y < n; y++){
                                    if(isti[i - 1][z][y][0]){
                                        lijevo = true;
                                        break;
                                    }
                                }
                            }
                        }
                        if(i != n - k){
                            desno = false;
                            for(int z = 0; z < n; z++){
                                for(int y = z + 1; y < n; y++){
                                    if(isti[i + k][z][y][1]){
                                        desno = true;
                                        break;
                                    }
                                }
                            }
                        }
                        if(desno && lijevo) return cout << "DA", 0;
                    }
                    ok = 1;
                }
            }
        }
    }
    cout << "NE";
}

• Subtask 1: 9 / 9
• Subtask 2: 0 / 9
• Subtask 3: 0 / 9
• Subtask 4: 0 / 9
• Subtask 5: 0 / 9
• Subtask 6: 0 / 9
• Subtask 7: 0 / 9
• Subtask 8: 0 / 9
• Subtask 9: 0 / 9
• Subtask 10: 0 / 9