Ruudukko

#include <bits/stdc++.h>
using namespace std;
int n;
string s;

int main() {
	cin >> n;
	char t[n][n];
	string z[n][n];
	for (int i=0; i<n; i++) {
		cin >> s;
		for (int j=0; j<n; j++) {
			t[i][j]=s[j];
}
}
	z[n-1][n-1]=t[n-1][n-1];
	for (int i=n-2; i>=0; i--) {
		z[n-1][i]=t[n-1][i]+z[n-1][i+1];
		z[i][n-1]=t[i][n-1]+z[i+1][n-1];
}
	for (int i=n-2; i>=0; i--) {
		for (int j=n-2; j>=0; j--) {
			z[i][j]=min(z[i+1][j], z[i][j+1]);
			z[i][j]=t[i][j]+z[i][j];
}
}	
	cout << z[0][0];
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: RUNTIME ERROR

Test 12

Group: 3

Verdict: RUNTIME ERROR

Test 13

Group: 3

Verdict: RUNTIME ERROR

Test 14

Group: 3

Verdict: RUNTIME ERROR

Test 15

Group: 3

Verdict: RUNTIME ERROR