提出 #654911

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ソースコード 拡げる

#include <bits/stdc++.h>
#define FOR(i, a, b) for(int (i) = (a); (i) <= (b); ++(i))
#define rep(i, n) FOR(i, 0, n - 1)
#define rep1(i, n) FOR(i, 1, n)
#define rrep(i, n) for(int (i) = (n) - 1; (i) >= 0; --(i))
#define all(a) (a).begin(),(a).end()
#define PB push_back
using namespace std;
using ll = long long int;
using vb = vector<bool>;
using vi = vector<int>;
using vd = vector<double>;
using vll = vector<ll>;
using vvb = vector<vb>;
using vvi = vector<vi>;
using vvd = vector<vd>;
using vvll = vector<vll>;
using vvvi = vector<vvi>;
using vvvd = vector<vvd>;
// using P = pair<int, int>;
const int INF = 0x7fffffff;
// const ll INF = 0x3fffffffffffffff;
const ll divisor = 1000000007;

void mainmain(){
  int N, L;
  string S;
  cin >> N >> L >> S;
  int tab = 1;
  int ans = 0;
  rep(i, N){
    if(S[i] == '+'){
      tab++;
      if(tab > L){
        ans++;
        tab = 1;
      }
    }
    else tab--;
  }
  cout << ans << endl;
}

int main(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  // cout << fixed << setprecision(15);
  mainmain();
  return 0;
}

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