Submission #1268282

#	Time	Username	Problem	Language	Result	Execution time	Memory
1268282		chf	Homework (CEOI22_homework)	C++20	0 / 100	184 ms	132584 KiB

Main

#include <bits/stdc++.h>
using namespace std;

string s;
int pos; 
int N; 

pair<int,int> dfs(){
	if(s[pos]=='?'){ 
		pos++;
		return {1,N};
	}
	string op;
	while(isalpha(s[pos])){
		op.push_back(s[pos]);
		pos++;
	}
	pos++;
	auto L=dfs();
	pos++;
	auto R=dfs();
	pos++; 
	if(op=="min") return {min(L.first,R.first),min(L.second,R.second)};
	else return {max(L.first,R.first),max(L.second,R.second)};
}

int main(){
	cin>>s;
	N=count(s.begin(),s.end(),'?');
	pos=0;
	auto ans=dfs();
	cout<<ans.second-ans.first+1<<"\n";
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 13
• Subtask 3: 0 / 13
• Subtask 4: 0 / 30
• Subtask 5: 0 / 34