class HW_250135 {

public int solution(int h1, int m1, int s1, int h2, int m2, int s2) {

int cnt = 0;

double start = h1 * 3600 + m1 * 60 + s1;

double end = h2 * 3600 + m2 * 60 + s2;

int halfDay = 12 * 3600;

if (start == 0 || start == halfDay)

cnt++;

while (start < end) {

double h = (start / 120) % 360; // 시침

double m = (start / 10) % 360; // 분침

double s = (start * 6) % 360; // 초침

// 다음 시간의 각도 계산

double nextH = ((start + 1) / 120) % 360;

double nextM = ((start + 1) / 10) % 360;

double nextS = ((start + 1) * 6) % 360;

// 360도 -> 0도

if (nextH == 0.0) {

nextH = 360.0;

}

if (nextM == 0.0){

nextM = 360.0;

}

if (nextS == 0.0) {

nextS = 360.0;

}

if (s < h && nextH <= nextS) // 초침 == 시침

cnt++;

if (s < m && nextM <= nextS) // 초침==분침

cnt++;

if (nextH == nextS && nextM == nextS) // 시침,분침==초침

cnt--;

start++;

}

return cnt;

}

}