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PAT (Advanced Level) 1093. Count PAT's (25)
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PAT (Advanced Level) 1093. Count PAT's (25)
预处理每个位置之前有多少个P,每个位置之后有多少个T. 对于每个A,贡献的答案是这个A之前的P个数*这个A之后T个数. #include<cstdio> #include<cstring> ; ; long long dp1[maxn],dp2[maxn]; char s[maxn]; int main() { scanf("%s",s); memset(dp1,,sizeof dp1); ]==]=; ;s[i];i++) { dp1[i]=dp1[i-];…
【PAT甲级】1093 Count PAT's (25 分)
题意: 输入一行由大写字母'P','A','T',组成的字符串,输出一共有多少个三元组"PAT"(相对顺序为PAT即可),答案对1e9+7取模. AAAAAccepted code: #define HAVE_STRUCT_TIMESPEC #include<bits/stdc++.h> using namespace std; ; string s; ],numpa[]; ]; int main(){ ios::sync_with_stdio(false); cin.ti…
PAT (Advanced Level) 1113. Integer Set Partition (25)
简单题. #include<cstdio> #include<cstring> #include<cmath> #include<vector> #include<map> #include<queue> #include<stack> #include<algorithm> using namespace std; +]; ,sum2; int n; int main() { scanf("%d&q…
PAT (Advanced Level) 1110. Complete Binary Tree (25)
判断一棵二叉树是否完全二叉树. #include<cstdio> #include<cstring> #include<cmath> #include<vector> #include<map> #include<queue> #include<stack> #include<algorithm> using namespace std; int n,root; ; struct Node { int left…
PAT (Advanced Level) 1094. The Largest Generation (25)
简单DFS. #include<cstdio> #include<cstring> #include<cmath> #include<algorithm> #include<map> #include<queue> #include<stack> #include<vector> using namespace std; ; int n,m; vector<int>g[maxn]; int ans[…
PAT (Advanced Level) 1074. Reversing Linked List (25)
简单题. #include<cstdio> #include<cstring> #include<cmath> #include<vector> #include<map> #include<stack> #include<queue> #include<string> #include<algorithm> using namespace std; +; struct Node { ]; ]; ]…
PAT (Advanced Level) 1062. Talent and Virtue (25)
简单排序.题意较长. #include<cstdio> #include<cstring> #include<cmath> #include<queue> #include<vector> #include<string> #include<stack> #include<map> #include<algorithm> using namespace std; struct X { int id;…
PAT (Advanced Level) 1060. Are They Equal (25)
模拟题.坑点较多. #include<iostream> #include<cstring> #include<cmath> #include<algorithm> #include<cstdio> #include<map> #include<queue> #include<string> #include<stack> #include<vector> using namespace…
PAT (Advanced Level) 1056. Mice and Rice (25)
简单模拟. #include<iostream> #include<cstring> #include<cmath> #include<algorithm> #include<cstdio> #include<map> #include<queue> #include<string> #include<stack> #include<vector> using namespace std…
PAT (Advanced Level) 1052. Linked List Sorting (25)
简单题. #include<iostream> #include<cstring> #include<cmath> #include<algorithm> #include<cstdio> #include<map> #include<queue> #include<string> #include<stack> #include<vector> using namespace std;…