Submission #830388

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
830388	2023-08-19 05:28:31	PoonYaPat	Homework (CEOI22_homework)	C++14	100 / 100	243 ms	201380 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> pii;
string s;
int n,cnt,com[20000005];
bool is_min[2000005];
vector<int> adj[2000005];
int build(int l, int r) {
    int now=++cnt;
    if (l!=r) {
        adj[now].push_back(build(l+4,com[l+3]-1));
        adj[now].push_back(build(com[l+3]+1,r-1));
        if (s[l+1]=='i') is_min[now]=true;
    }
    return now;
}
pii dfs(int x) { //return min,max
    if (adj[x].size()==0) return pii(1,n);
    pii L=dfs(adj[x][0]), R=dfs(adj[x][1]), res;
    
    if (is_min[x]) {
        res.first=min(L.first,R.first);
        res.second=L.second+R.second-n-1;
    } else {
        res.first=L.first+R.first;
        res.second=max(L.second,R.second);
 
 
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Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:41:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |     for (int i=0; i<s.size(); ++i) {
      |                   ~^~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 13 / 13
• Subtask 3: 13 / 13
• Subtask 4: 30 / 30
• Subtask 5: 34 / 34