Submission #565605

#	Time	Username	Problem	Language	Result	Execution time	Memory
565605		shrimb	Election (BOI18_election)	C++17	28 / 100	3055 ms	844 KiB

election

#pragma GCC optimize ("Ofast")
#pragma GCC target ("avx,avx2,fma")

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

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<class x>
using ordered_set = tree<x, null_type,less<x>, rb_tree_tag,tree_order_statistics_node_update>;

#define int long long
#define endl '\n'
#define mod 1000000007
//\
#define mod 1686876991

const int maxn = 100001;
bool b[maxn];
signed main () {
    cin.tie(0)->sync_with_stdio(0);

    int n;
    cin >> n;
    string s;
    cin >> s;
    int q;
    cin >> q;
    while (q--) {
        int l, r;
        cin >> l >> r;
        int sm = 0;
        int ans = 0;
        for (int i = l - 1 ; i < r ; i++) {
            if (s[i] == 'T') sm--;
            else sm++;
            if (sm < 0) sm++, ans++, b[i] = 1;
        }
        sm = 0;
        for (int i = r - 1 ; i >= l - 1 ; i--) {
            if (s[i] == 'T') {if (!b[i]) sm--;}
            else sm++;
            if (sm < 0) sm++, ans++;
            b[i] = 0;
        }
        cout << ans << endl;
    }
}

Compilation message (stderr)

election.cpp:17:1: warning: multi-line comment [-Wcomment]
   17 | //\
      | ^

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