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Cod sursa(job #593810)
# include <cstdio>
# include <cstring>
# include <cassert>
const char *FIN = "invers.in", *FOU = "invers.out" ;
char S[10005], S2[10005];
int T, N ;
int check1(int l, int n) {
int i, j, k;
for (i = l, j = n - 1; 1; i++, j--) {
if (i == j)
return S[i] % 2 == 0;
if (j - i == 1)
return S[i] == S[j] || (S[i] == S[j] + 11);
switch (S[i] - S[j]) {
case 0:
break;
case 1:
S[i + 1] += 10;
break;
case 11:
S[i + 1] += 10;
case 10:
if (S[j] == 9) return 0;
for (S[k = j - 1]--; S[k] < 0 && k >= i; )
S[k] += 10, S[--k]--;
if (k == i) return 0;
break;
default:
return 0;
}
}
}
int check (int L, int N) {
for (int i = L, j = N - 1, k; ; ++i, --j) {
if (i == j) {
return (S[i] & 1) == 0 ;
} else if (j - i == 1) {
return (S[i] == S[j] || (S[i] == S[j] + 11)) ;
} else {
if (S[i] - S[j] == 0) {
continue ;
} else if (S[i] - S[j] == 1) {
S[i + 1] += 10 ;
} else if (S[i] - S[j] == 11) {
S[i + 1] += 10 ;
if (S[i] - S[j] == 10) assert (0), assert (1) ;
return 0 ;
} else if (S[i] - S[j] == 10) {
if (S[j] == 9) return 0;
for (S[k = j - 1]-- ; S[k] < 0 && k >= i ; S[--k]--)
S[k] += 10 ;
if (k == i) return 0;
} else {
return 0 ;
}
}
}
}
const char *solve (int N) {
if (N == 1) return (S[0] & 1) ? "NU" : "DA";
else if (N == 2) return (S[0] == S[1] || (S[0] == 1 && (S[1] & 1) == 0)) ? "DA" : "NU" ;
else if (S[0] == 1) {
memcpy (S2, S, sizeof (S)) ;
S[1] += 10 ;
if (check (1, N)) return "DA" ;
else if (S[0] == 1 && S[N - 1] == 0) {
return "NU" ;
} else {
memcpy (S, S2, sizeof (S2)) ;
return check (0, N) ? "DA" : "NU" ;
}
} else {
return check (0, N) ? "DA" : "NU" ;
}
return "NU";
}
int main (void) {
freopen (FIN, "r", stdin) ;
freopen (FOU, "w", stdout) ;
for (scanf ("%d", &T); T; --T) {
scanf ("%s", S) ;
for (N = 0; S[N]; S[N++] -= '0') ;
printf ("%s\n", solve (N)) ;
}
}