#include "stdio.h"#include "math.h"#include "memory.h"#define M1 (1e15 + 1.0)typedef struct{double x,y;}point;int n;point pom,d;point enemy[6][11];int m[6];double t1[6];double t2[11];double judgeline(point a1,point a2){double t,x1,x2,y1,y2,u1,u2;x1 = a1.x - pom.x;y1 = a1.y - pom.y;x2 = a2.x - pom.x;y2 = a2.y - pom.y;u1 = x1 * d.y - y1 * d.x;u2 = x2 * d.y - y2 * d.x;if (u1 * u2 > 0){t = M1;return t;}x1 = a1.x;y1 = a1.y;x2 = a2.x;y2 = a2.y;u1 = pom.x * (y2 - y1) - pom.y * (x2 - x1) - x1 * y2 + x2 * y1;u2 = d.y * (x2 - x1) - d.x * (y2 - y1);t = u1 / u2;if (t < 0)t = M1;return t;}double judgeenemy(int i){int j;double tmin = M1;for (j = 1;j <= m[i];j ++){t2[j] = judgeline(enemy[i][j-1],enemy[i][j]);if (t2[j] < tmin)tmin = t2[j];}return tmin;}int solve(){int i,pmin;double min = M1;bool judge;for (i = 1;i <= n;i ++){t1[i] = judgeenemy(i);if (t1[i] < min){min = t1[i];pmin = i;}}if (min > M1 - 2)judge = 0;else if (pmin != 1)judge = 0;elsejudge = 1;if (judge)printf("HITn");elseprintf("MISSn");return 0;}int init(){memset(enemy,0,sizeof(enemy));memset(m,0,sizeof(m));memset(t1,0,sizeof(t1));scanf("%lf%lf",&pom.x,&pom.y);scanf("%lf%lf",&d.x,&d.y);int i,j;for(i = 1;i <= n;i ++){scanf("%d",&m[i]);for (j = 1;j <= m[i];j ++)scanf("%lf%lf",&enemy[i][j].x,&enemy[i][j].y);enemy[i][0].x = enemy[i][m[i]].x;enemy[i][0].y = enemy[i][m[i]].y;}return 0;}int main(){while(scanf("%d",&n) != EOF && n > 0){init();solve();}return 0;}
