Submission #571423

#	Time	Username	Problem	Language	Result	Execution time	Memory
571423		BackNoob	Election (BOI18_election)	C++14	28 / 100	3070 ms	1132 KiB

election

#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define endl '\n'
#define MASK(i) (1LL << (i))
#define ull unsigned long long
#define ld long double
#define pb push_back
#define all(x) (x).begin() , (x).end()
#define BIT(x , i) ((x >> (i)) & 1) 
#define TASK "task"
#define sz(s) (int) (s).size()

using namespace std;
const int mxN = 5e5 + 227;
const int inf = 1e9 + 277;
const int mod = 24211007;
const ll infll = 1e18 + 7;
const int base = 200;
const int LOG = 29;
 
template <typename T1, typename T2> bool minimize(T1 &a, T2 b) {
	if (a > b) {a = b; return true;} return false;
}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b) {
	if (a < b) {a = b; return true;} return false;
}

int n;
int q;
string s;
bool vis[mxN];

void solve()
{	
	cin >> n;
	cin >> s;

	cin >> q;
	while(q--) {
		int l, r;
		cin >> l >> r;
		for(int i = l; i <= r; i++) vis[i] = false;
		int cur = 0;
		int tmp = 0;
		for(int i = l; i <= r; i++) {
			if(s[i - 1] == 'C') ++cur;
			else --cur;
			if(cur < 0) {
				if(vis[i] == false) {
					++tmp;
					vis[i] = true;
				}
				cur = 0;
			}
		}
		cur = 0;
		for(int i = r; i >= l; i--) {
			if(vis[i] == true) continue;
			if(s[i - 1] == 'C') ++cur;
			else --cur;
			if(cur < 0) {
				if(vis[i] == false) {
					vis[i] = true;
					++tmp;
				}
				++cur;
			}
		}
		cout << tmp << endl;
	}
}
 
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen(TASK".in" , "r" , stdin);
    //freopen(TASK".out" , "w" , stdout);
		
    int tc = 1;
    // cin >> tc;
    while(tc--) {
    	solve();
    }
    return 0;
}

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