Submission #1227866

#	Time	Username	Problem	Language	Result	Execution time	Memory
1227866		Sir_Ahmed_Imran	Election (BOI18_election)	C++17	28 / 100	3094 ms	1220 KiB

election

            //    01001100 01001111 01010100 01000001    \\
            //                                           \\
            //                ╦  ╔═╗╔╦╗╔═╗               \\
            //                ║  ║ ║ ║ ╠═╣               \\
            //                ╩═╝╚═╝ ╩ ╩ ╩               \\
            //                                           \\
            //    01001100 01001111 01010100 01000001    \\

#include <bits/stdc++.h>
using namespace std;
#define N 500001
#define nl '\n'
#define ff first
#define ss second
#define ll long long
#define ld long double
#define terminator main
#define pll pair<ll,ll>
#define append push_back
#define pii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define L0TA ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)

int a[N];
bool vis[N];

void solve(){
    string s;
    int n, q, l, r, o, x;
    cin >> n >> s;
    for(int i = 0; i < n; i++){
        if(s[i] == 'C') a[i + 1] = 1;
        else a[i + 1] = - 1;
    }
    cin >> q;
    while(q--){
        cin >> l >> r;
        o = x = 0;
        for(int i = l; i <= r; i++){
            if(a[i] + o < 0){
                vis[i] = 1;
                x++;
            }
            else o += a[i];
        }
        o = 0;
        for(int i = r; i >= l; i--){
            if(vis[i]) vis[i] = 0;
            else if(a[i] + o < 0) x++;
            else o += a[i];
        }
        cout << x << nl;
    }
}

int terminator(){
    L0TA;
    solve();
    return 0;
}

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