Submission #1011352

#	Time	Username	Problem	Language	Result	Execution time	Memory
1011352		pcc	Telegraph (JOI16_telegraph)	C++17	0 / 100	1 ms	348 KiB

telegraph

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

#define ll long long

string s;
vector<ll> pos[2];
ll N,M;

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);cout.tie(0);
	cin>>N>>M;
	if(N>1e6)return 0;
	for(int i = 0;i<M;i++){
		string t;
		int c;
		cin>>t>>c;
		while(c--)s += t;
	}
	reverse(s.begin(),s.end());
	ll sum = 0,ans = 0;
	for(auto &i:s){
		if(i == 'F'){
			sum--;
			ans = max(ans,sum);
		}
		else sum++;
	}
	if(sum>0)cout<<"-1\n";
	else cout<<ans<<'\n';
	return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 30
• Subtask 3: 0 / 30
• Subtask 4: 0 / 30