제출 #1129821

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1129821		rayan_bd	Election (BOI18_election)	C++17	28 / 100	3094 ms	1216 KiB

election

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;

typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> pbds; 


#define getar(ar,n) for(ll i=0;i<n;++i) cin>>ar[i]
#define show(n) cout<<n<<'\n'
#define all(v) v.begin(), v.end()
#define br cout<<"\n"
#define pb push_back
#define nl '\n'
#define yes cout<<"YES\n"
#define no cout<<"NO\n"
#define ret return
#define ll long long
#define ld long double
#define sza(x) ((int)x.size())
#define fi first
#define se second

const int mxN = 1e5 + 5;
const ll MOD = 1e9 + 7;
const ll INF = 1e9;
const ld EPS = 1e-9;


void lets_go() {
    ll n,l,r,q;cin>>n;
    string str;cin>>str;
    cin>>q;
    while(q--){
    	cin>>l>>r;--l,--r;
    	ll c=0,t=0,ans=0;
    	vector<ll> nullify(n+1,0);
    	for(ll i=l;i<=r;++i){
    		if(str[i]=='T') ++t;
    		else ++c;
    		if(t>c)--t,++nullify[i];
    	}
    	t=c=0;
    	for(ll i=r;i>=l;--i){
    		if(nullify[i]) continue;
    		if(str[i]=='T') ++t;
    		else ++c;
    		if(t>c){
    			--t;
    			if(nullify[i]!=1) ++nullify[i];
    		}
    	}
    	for(ll i=0;i<n;++i){
    		ans+=nullify[i];
    	}
    	show(ans);
    }
}

int main() {
    

    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    
    lets_go();

    return 0;
}

• Subtask 1: 28 / 28
• Subtask 2: 0 / 54
• Subtask 3: 0 / 18