Submission #721018

#	Time	Username	Problem	Language	Result	Execution time	Memory
721018		TimDee	Election (BOI18_election)	C++17	28 / 100	3058 ms	2240 KiB

election

//   you're already the best
//   yay
//             _
//   ^ ^      //
// >(O_O)<___//
//   \ __ __  \
//    \\ \\ \\\\

#include <bits/stdc++.h>
using namespace std;
 
//#pragma GCC optimize("O3","unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

using ll = long long;
#define int long long
//#define double long double
#define forn(i,n) for(int i=0; i<(n); ++i)
#define pb push_back
#define pi pair<int,int>
#define f first
#define s second 
#define vii(a,n) vector<int> a(n); forn(i,n) cin>>a[i];
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int inf = 1e18;
const int mod = 998244353;

void solve() {
    
    int n; cin>>n;
    string s; cin>>s;
    int m; cin>>m;
    while (m--) {
        int l,r; cin>>l>>r;
        vector<int> z(n,0);
        int x=0;
        int ans=0;
        for (int i=l-1; i<r; ++i) {
            x+=1-2*(s[i]=='T');
            if (x<0) {
                z[i]=1;
                x-=1-2*(s[i]=='T');
                ++ans;
            }
        }
        x=0;
        for (int i=r-1; i>=l-1; --i) {
            if (z[i]) continue;
            x+=1-2*(s[i]=='T');
            if (x<0) {
                z[i]=1;
                x-=1-2*(s[i]=='T');
                ++ans;
            }
        }
        cout<<ans<<'\n';
    }

}
     
int32_t main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int t=1;
    //cin>>t;
    while (t--) solve();
    return 0;
}

Compilation message (stderr)

election.cpp:6:1: warning: multi-line comment [-Wcomment]
    6 | //   \ __ __  \
      | ^

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