6
4815 2 1
5716 1 0
7842 1 0
4901 0 0
8585 3 3
8555 3 2
2
4815 0 0
2999 3 3
0

3585
Not sure

猜对的数字间是一一对应关系。
#include <stdio.h>
#include <string.h>

struct Node {
    char str[5];
    int a, b;
} A[102];

bool Judge(int v, int id) {
    char buf[4], *str = A[id].str;
    int i = 3, a = 0, b = 0, j;
    bool vis[4] = {0};
    for ( ; i >= 0; --i) {
        buf[i] = v % 10 + '0';
        v /= 10;
    }
    for (i = 0; i < 4; ++i) {
        for (j = 0; j < 4; ++j)
            if (str[i] == buf[j] && !vis[j]) {
                vis[j] = 1; ++a; break;
            }
        if (str[i] == buf[i]) ++b;
    }
    return a == A[id].a && b == A[id].b;
}

int main() {
    // freopen("stdin.txt", "r", stdin);
    int N, i, j, val, cnt;
    while (scanf("%d", &N), N) {
        for (i = 0; i < N; ++i) {
            scanf("%s%d%d", A[i].str, &A[i].a, &A[i].b);
        }
        cnt = 0;
        for (i = 1000; i < 10000; ++i) {
            for (j = 0; j < N; ++j)
                if (!Judge(i, j)) break;
            if (j == N) {
                if (++cnt == 2) break;
                val = i;
            }
        }
        if (cnt == 1) printf("%d\n", val);
        else printf("Not sure\n");
    }
    return 0;
}