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Cod sursa(job #68987)
#include <cstdio>
#define max 1024
FILE *in = fopen("balanta.in","r"), *out = fopen("balanta.out","w");
int n, m;
int k;
int r;
int H[max], L[max];
int A[max], B[max];
int main()
{
fscanf(in, "%d %d", &n, &m);
for ( int i = 1; i <= n; ++i )
H[i] = L[i] = i;
for ( int i = 0; i < m; ++i )
{
int EA[max+1] = {0};
int EB[max+1] = {0};
fscanf(in, "%d", &k);
for ( int i = 0; i < k; ++i )
fscanf(in, "%d", &A[i]), EA[A[i]] = 1;
for ( int i = 0; i < k; ++i )
fscanf(in, "%d", &B[i]), EB[B[i]] = 1;
fscanf(in, "%d", &r);
if ( r == 0 )
{
for ( int i = 1; i <= n; ++i )
if ( EA[i] || EB[i] )
H[i] = -1, L[i] = -1;
}
else if ( r == 1 )
{
for ( int i = 1; i <= n; ++i )
{
if ( !EA[H[i]] )
H[i] = -1;
if ( !EB[L[i]] )
L[i] = -1;
}
}
else
{
for ( int i = 1; i <= n; ++i )
{
if ( !EB[H[i]] )
H[i] = -1;
if ( !EA[L[i]] )
L[i] = -1;
}
}
}
int a = 0, b = 0;
int poza = 0, pozb = 0;
for ( int i = 1; i <= n; ++i )
{
if ( H[i] != -1 )
++a, poza = i;
if ( L[i] != -1 )
++b, pozb = i;
}
if ( a == 1 && b == 0 )
fprintf(out, "%d\n", poza);
else if ( a == 0 && b == 1 )
fprintf(out, "%d\n", pozb);
else
fprintf(out, "%d\n", 0);
return 0;
}