AC 17 1A C small

2017/1A/C/C-large-answers.out

@@ -0,0 +1,7 @@
+Case #1: 5
+Case #2: 2
+Case #3: IMPOSSIBLE
+Case #4: 5
+Case #5: IMPOSSIBLE
+Case #6: 11
+Case #7: 11459

2017/1A/C/C-large-practice.in

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2017/1A/C/C-small-answers.out

@@ -0,0 +1,100 @@
+Case #1: 5
+Case #2: 2
+Case #3: IMPOSSIBLE
+Case #4: 5
+Case #5: 162
+Case #6: 164
+Case #7: 28
+Case #8: 27
+Case #9: 158
+Case #10: 158
+Case #11: IMPOSSIBLE
+Case #12: IMPOSSIBLE
+Case #13: 14
+Case #14: 84
+Case #15: 166
+Case #16: 4
+Case #17: 162
+Case #18: 157
+Case #19: 21
+Case #20: 159
+Case #21: 38
+Case #22: 39
+Case #23: 16
+Case #24: 53
+Case #25: IMPOSSIBLE
+Case #26: 160
+Case #27: 20
+Case #28: 171
+Case #29: 157
+Case #30: 20
+Case #31: 162
+Case #32: IMPOSSIBLE
+Case #33: 9
+Case #34: 78
+Case #35: 19
+Case #36: 78
+Case #37: 14
+Case #38: 170
+Case #39: 169
+Case #40: 5
+Case #41: 158
+Case #42: 169
+Case #43: 12
+Case #44: 172
+Case #45: 14
+Case #46: 53
+Case #47: 156
+Case #48: 83
+Case #49: 5
+Case #50: 41
+Case #51: 54
+Case #52: 81
+Case #53: 163
+Case #54: 22
+Case #55: 2
+Case #56: 166
+Case #57: 11
+Case #58: 167
+Case #59: 54
+Case #60: 170
+Case #61: 1
+Case #62: 160
+Case #63: 11
+Case #64: 171
+Case #65: 171
+Case #66: 159
+Case #67: 79
+Case #68: 4
+Case #69: 168
+Case #70: 82
+Case #71: 53
+Case #72: 159
+Case #73: 174
+Case #74: 37
+Case #75: IMPOSSIBLE
+Case #76: 20
+Case #77: 168
+Case #78: 41
+Case #79: 162
+Case #80: 15
+Case #81: 3
+Case #82: 16
+Case #83: 3
+Case #84: 161
+Case #85: 13
+Case #86: 13
+Case #87: 170
+Case #88: 53
+Case #89: 12
+Case #90: 39
+Case #91: IMPOSSIBLE
+Case #92: 15
+Case #93: 173
+Case #94: 166
+Case #95: 163
+Case #96: 162
+Case #97: 155
+Case #98: 164
+Case #99: 54
+Case #100: 41

2017/1A/C/C-small-practice.in

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2017/1A/C/main.go

@@ -0,0 +1,114 @@
+package main
+
+import (
+	"fmt"
+	"math"
+)
+
+var hd, ad, hk, ak, b, d int
+var hp int
+
+type state struct {
+	hd int
+	ad int
+	hk int
+	ak int
+	t  int
+	c  bool
+}
+
+func getBuffCnt() int {
+	if b == 0 {
+		return 0
+	}
+	bAddA := int(math.Ceil(float64(hk) / float64(ad)))
+	for cnt := 1; ; cnt++ {
+		nextBAA := cnt + int(math.Ceil(float64(hk)/float64(ad+cnt*b)))
+		if bAddA < nextBAA {
+			return cnt - 1
+		}
+		bAddA = nextBAA
+	}
+}
+
+func nextDebuffCnt() int {
+	if d == 0 || ak == 0 {
+		return 0
+	} else if ak <= d {
+		return 1
+	}
+	killed := int(math.Ceil(float64(hd) / float64(ak)))
+	minAk := int(math.Ceil(float64(hd)/float64(killed))) - 1
+	return int(math.Ceil(float64(ak-minAk) / float64(d)))
+}
+
+func simD(debuffCnt, t int, c bool) int {
+	if debuffCnt == 0 {
+		return t
+	}
+	if hp <= ak-d { // Need cure
+		if c { // Cured?
+			return 0 // Die
+		}
+		hp = hd - ak
+		return simD(debuffCnt, t+1, true) // Cure
+	}
+	ak = maxInt(0, ak-d)
+	hp -= ak
+	return simD(debuffCnt-1, t+1, false) // Debuff
+}
+
+func simBA(buffCnt int, st state) int { // Simulate buff and attack
+	if st.hk <= 0 { // Kill
+		return st.t
+	}
+	if st.hd <= st.ak && st.ad < st.hk { // Need cure
+		if st.c { // Cured?
+			return 0 // Die
+		}
+		return simBA(buffCnt, state{hd - st.ak, st.ad, st.hk, st.ak, st.t + 1, true}) // Cure
+	}
+	if buffCnt != 0 {
+		return simBA(buffCnt-1, state{st.hd - st.ak, st.ad + b, st.hk, st.ak, st.t + 1, false}) // Buff
+	}
+	return simBA(0, state{st.hd - st.ak, st.ad, st.hk - st.ad, st.ak, st.t + 1, false}) // Attack
+}
+
+func main() {
+	var T int
+	fmt.Scan(&T)
+	for tc := 1; tc <= T; tc++ {
+		fmt.Scan(&hd, &ad, &hk, &ak, &b, &d)
+		hp = hd
+
+		println("Case", tc)
+
+		buff := getBuffCnt()
+		turn := simBA(buff, state{hp, ad, hk, ak, 0, false})
+		debuff, dt := nextDebuffCnt(), 0
+		for debuff != 0 {
+			dt = simD(debuff, dt, false)
+			if dt == 0 {
+				break
+			}
+			dbat := simBA(buff, state{hp, ad, hk, ak, dt, false})
+			if turn == 0 || dbat < turn {
+				turn = dbat
+			}
+			debuff = nextDebuffCnt()
+		}
+		fmt.Printf("Case #%d: ", tc)
+		if turn == 0 {
+			fmt.Println("IMPOSSIBLE")
+		} else {
+			fmt.Println(turn)
+		}
+	}
+}
+
+func maxInt(x, y int) int {
+	if x < y {
+		return y
+	}
+	return x
+}

2017/1A/C/test.in

@@ -0,0 +1,6 @@
+5
+11 5 16 5 0 0
+3 1 3 2 2 0
+3 1 3 2 1 0
+2 1 5 1 1 1
+90 1 91 45 0 1

2017/1A/C/test.out

@@ -0,0 +1,5 @@
+Case #1: 5
+Case #2: 2
+Case #3: IMPOSSIBLE
+Case #4: 5
+Case #5: 157