codeforces 1132 F. Clear the String(dp) 题目: https://codeforces.com/contest/1132/problem/F 题意:给出一个长度为n的字符串,每次可以删除一个字母相同的字串,问最少需要删多少次。 思路:动态规划,首先考虑定义状态dp[i][j]为删除下标 i~j 字母的最少次数,由于相同字母可以一同删除,所以我们更新dp值...
}intvis1[maxn],vis2[maxn],a[maxn],b[maxn];intn,k,tot,sa,sb,sta[maxn];intans[maxn];intmain(){ cin>>n>>k; rep(i,1,n) { scanf("%d",&a[i]); }intnum=0;inttop=0; rep(i,1,n) { scanf("%d",&b[i]); vis2[a[i]]?(vis2[a[i]]=0,num--):(vis1[a[i]]...
b) string s(str) //拷贝构造函数 生成str的复制品 c) string s(str,stridx) //将字符串str内“始于位置stridx”的部分当作字符串的初值 d) string s(str,stridx,strlen) //将字符串str内“始于stridx且长度顶多strlen”的部分作为字符串的初值 e) string s(cstr) //将C字符串作为s的初值 f) stri...
Substrings Sort CodeForces - 988B(sort()+s.find()函数应用) 水题,记录一下两个函数的使用。 AC代码: #include <iostream> #include <string> #include <algorithm> using namespace std; string s[105]; bool cmp(string a,string b){ if(a.size()!=b.size())return a.size()<b.size(); els...
String aa is a substring of string bb if it is possible to choose several consecutive letters in bb in such a way that they form aa. For example, string "for" is contained as a substring in strings "codeforces", "for" and "therefore", but is not contained as a substring in strings...
你需要输出一个长度为n的字符序列(由小写字母组成),且这个字符串中至少包含k个不同的字符。另外题目还有要求:给你两个长度为p和q的序列,设字符序列存在s中 那么就会有s[Pi]<=s[P(i+1)] (i<p) s[Qi]<=s[Q(i+1)] (i<q) 如果你能找出来满足这些条件的字符串s,就输出YES和s,否则输出NO ...
#include <string> #include <set> #include <ctime> #include <cmath> #include <cctype> using namespace std; #define maxn 10010 #define LL long long int cas=1,T; int n,a[maxn],b[maxn]; int main() { scanf("%d",&n);
String aa is a substring of string bb if it is possible to choose several consecutive letters in bb in such a way that they form aa. For example, string "for" is contained as a substring in strings "codeforces", "for" and "therefore", but is not contained as a substring in strings...
https://codeforces.com/contest/1197/submission/57928269#![allow(unused_imports)] use std::cmp::*; use std::collections::*; use std::ops::Bound::*; struct Scanner { buffer : std::collections::VecDeque<String> } impl Scanner { fn new() -> Scanner { Scanner { buffer: std::...
Stringais a substring of stringbif it is possible to choose several consecutive letters inbin such a way that they forma. For example, string "for" is contained as a substring in strings "codeforces", "for" and "therefore", but is not contained as a substring in strings "four", "fofo...