Submission #313951

#	Time	Username	Problem	Language	Result	Execution time	Memory
313951		phathnv	Ispit (COCI19_ispit)	C++11	90 / 90	333 ms	768 KiB

Main

#include <bits/stdc++.h>

#define mp make_pair
#define X first
#define Y second
#define taskname "ISPIT"

using namespace std;

typedef long long ll;
typedef pair <int, int> ii;

const int N = 502;

int n, k;
char a[N][N];
int d[26];

void readInput(){
    scanf("%d %d", &n, &k);
    for(int i = 1; i <= n; i++)
        scanf("%s", a[i] + 1);
}

bool check(int x1, int x2){
    for(int i = 0; i < 26; i++)
        d[i] = 0;
    int minP = n, maxP = 0;
    for(int i = 1; i <= n; i++)
        if (a[x1][i] != a[x2][i]){
            minP = min(minP, i);
            maxP = max(maxP, i);
            d[a[x1][i] - 'a']++;
            d[a[x2][i] - 'a']--;
        }
    if (maxP - minP + 1 > k)
        return 0;
    for(int i = 0; i < 26; i++)
        if (d[i] != 0)
            return 0;
    return 1;
}

void solve(){
    for(int x1 = 1; x1 <= n; x1++)
        for(int x2 = x1 + 1; x2 <= n; x2++)
            if (check(x1, x2)){
                printf("DA");
                return;
            }
    printf("NE");
}

int main(){
    if (fopen(taskname".inp", "r")){
        freopen(taskname".inp", "r", stdin);
        freopen(taskname".out", "w", stdout);
    }
    readInput();
    solve();
    return 0;
}

Compilation message (stderr)

ispit.cpp: In function 'void readInput()':
ispit.cpp:20:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   20 |     scanf("%d %d", &n, &k);
      |     ~~~~~^~~~~~~~~~~~~~~~~
ispit.cpp:22:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |         scanf("%s", a[i] + 1);
      |         ~~~~~^~~~~~~~~~~~~~~~
ispit.cpp: In function 'int main()':
ispit.cpp:56:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   56 |         freopen(taskname".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
ispit.cpp:57:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   57 |         freopen(taskname".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• 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