Halloween Costumes 玄学题

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Halloween Costumes 玄学题

传送门太难了,完全不懂设\(dp[i][j]\)为第i天到第j天的最少代价 \(dp[i][j]=dp[i][j-1]+1\)(第j天多穿一件衣服) \(dp[i][j]=min(dp[i][j],dp[i][k]+dp[k+1][j-1])\);(往前找一天k与j衣服相同,把中间的衣服都脱掉) #include <bits/stdc++.h> using namespace std; int n,m,dp[209][209],a[209]; int main() { int t,o=1;…

Lightoj 题目1422 - Halloween Costumes（区间DP）

1422 - Halloween Costumes PDF (English) Statistics Forum Time Limit: 2 second(s) Memory Limit: 32 MB Gappu has a very busy weekend ahead of him. Because, next weekend is Halloween, and he is planning to attend as many parties as he can. Since it's…

LightOj 1422 Halloween Costumes（区间DP）

B - Halloween Costumes Time Limit:2000MS Memory Limit:32768KB 64bit IO Format:%lld & %llu Submit Status Practice LightOJ 1422 Description Gappu has a very busy weekend ahead of him. Because, next weekend is Halloween, and he is planning to attend as…

LightOJ - 1422 Halloween Costumes —— 区间DP

题目链接:https://vjudge.net/problem/LightOJ-1422 1422 - Halloween Costumes PDF (English) Statistics Forum Time Limit: 2 second(s) Memory Limit: 32 MB Gappu has a very busy weekend ahead of him. Because, next weekend is Halloween, and he is planning to…

NOIP模拟测试39,思维禁锢专场「工业题·玄学题·卡常题」

工业题题解抱歉,题解没时间写了代码 #include<bits/stdc++.h> using namespace std; #define ll long long #define A 6666666 #define mod 998244353 ll jie[A],ni[A],acnt[A],bcnt[A]; ll fheng[A],fshu[A]; ll n,m,a,b; ll meng(ll x,ll k){ ll ans=1; for(;k;k>>=1,x=x*x%m…

NOIP模拟13「工业题·卡常题·玄学题」

T1:工业题基本思路这题有一个重要的小转化: 我们将原来的函数看作一个矩阵,\(f(i,j-1)*a\)相当于从\(j-1\)向右走一步并贡献a,\(f(i-1,j)*b\)相当于从\(i-1\)向下走一步并贡献b 那么问题就转化成了求从第\(0\)行与第\(0\)列的所有点走到点\((m,n)\)的所有方案数的总贡献在一个点,对于他之前的点的所有走法,他都有可能向下或右走并带来贡献,所以是统计所有方案数. 易知从点\((i,j)\)到点\((m,n)\)的走的步数是\(m…

LightOJ - 1422 Halloween Costumes （区间dp）

Description Gappu has a very busy weekend ahead of him. Because, next weekend is Halloween, and he is planning to attend as many parties as he can. Since it's Halloween, these parties are all costume parties, Gappu always selects his costumes in such…