http://poj.org/problem?id=3060 #include <stdio.h> #include <memory.h> int m[1000][1000]; int sx[1000], sy[1000]; int main() { int t, n, i, j, d, a, b, best; scanf( "%d", &t ); while( t-- ) { scanf( "%d%d", &d, &n ); best = 99999999; memset( m, 0, sizeof m ); memset( sx, 0, sizeof sx ); memset( sy, 0, sizeof sy ); for( i=0; i<n; i++ ) { scanf( "%d%d", &a, &b ); m[(a%d+d)%d][(b%d+d)%d]++; sx[(a%d+d)%d]++; sy[(b%d+d)%d]++; } for( i=0; i<d; i++ ) for( j=0; j<d; j++ ) if( sx[i] + sy[j] - m[i][j] < best ) best = sx[i] + sy[j] - m[i][j]; printf( "%dn", best ); } return 0; }
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