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22
TangDou/XiTi/1260.cpp
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22
TangDou/XiTi/1260.cpp
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#include <bits/stdc++.h>
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using namespace std;
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int x, y, z;
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int a[55];//成虫数量数组
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int b[55];//幼儿数量数组
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int main() {
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scanf("%d%d%d", &x, &y, &z);
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//从1月到x月
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for (int i = 1; i <= x; ++i)
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a[i] = 1, b[i] = 0; //第一个x月的成虫数量
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//从第x+1月开始有了变化,出生了第一个y对卵
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for (int i = x + 1; i <= z + 1; ++i) {
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b[i] = y * a[i - x]; //在i月的幼虫只与i-z月前的成虫有关
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a[i] = a[i - 1] + b[i - 2]; //第i个月的成虫只与i-1的成虫和i-2的幼虫有关。
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}
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printf("%d\n", a[z + 1]);//过了z个月
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}
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