Submission #638218

#	Time	Username	Problem	Language	Result	Execution time	Memory
638218		iee	Grudanje (COCI19_grudanje)	C++17	70 / 70	182 ms	6164 KiB

grudanje

// iee
#include <algorithm>
#include <iostream>
#include <cstring>
#include <cstdio>
#include <vector>
#include <set>
#include <map>

#define rep(i, a, b) for (auto i = (a); i <= (b); ++i)
#define per(i, a, b) for (auto i = (a); i >= (b); --i)
#define fi first
#define se second
using ll = long long;
using ull = unsigned long long;
using namespace std;
void work(int);

template <class T> void read(T &x) {
  x = 0; int f = 1, ch = getchar();
  while (!isdigit(ch)) { if (ch == '-') f = -1; ch = getchar(); }
  while (isdigit(ch)) x = x * 10 + (ch - '0'), ch = getchar();
  x *= f;
}

int main() {
  int TT = 1; // cin >> TT;
  rep(CAS, 1, TT)
    work(CAS);
  return 0;
}
const int N = 1e5 + 5;
int n, q, p[N];
pair<int, int> qry[N];
char s[N], now[N], S[N][26];
bool ok(int mid) {
  memcpy(now, s, sizeof s);
  rep(i, 1, mid) now[p[i]] = '*';
  rep(i, 1, n) {
    rep(j, 0, 25) S[i][j] = S[i - 1][j];
    if (now[i] != '*') S[i][now[i] - 'a']++;
  }
  rep(i, 1, q) {
    rep(j, 0, 25) {
      if (S[qry[i].se][j] - S[qry[i].fi - 1][j] > 1) return 0;
    }
  }
  return 1;
}
void work(int CASE) {
  scanf("%s", s + 1);
  n = strlen(s + 1);
  cin >> q;
  rep(i, 1, q) {
    cin >> qry[i].fi >> qry[i].se;
  }
  rep(i, 1, n) {
    cin >> p[i];
  }
  int l = 0, r = n;
  while (l < r) {
    int mid = l + r >> 1;
    if (ok(mid)) r = mid;
    else l = mid + 1;
  }
  cout << l;
}

Compilation message (stderr)

grudanje.cpp: In function 'void work(int)':
grudanje.cpp:62:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   62 |     int mid = l + r >> 1;
      |               ~~^~~
grudanje.cpp:51:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |   scanf("%s", s + 1);
      |   ~~~~~^~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 7 / 7
• Subtask 3: 7 / 7
• Subtask 4: 7 / 7
• Subtask 5: 7 / 7
• Subtask 6: 7 / 7
• Subtask 7: 7 / 7
• Subtask 8: 7 / 7
• Subtask 9: 7 / 7
• Subtask 10: 7 / 7