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0_0_30114362_14598.cpp:4:5: error: expected declaration before '}' token
     }    return 0; } int main(){    int T;    scanf("%d", &T);    while(T--) {        scanf("%d%d", &n, &k);        d[0] = n;        u[n] = 1;        dfs(1, n, n);        u[n] = 0;    }    return 0; }
     ^