Submission #679877

#	Time	Username	Problem	Language	Result	Execution time	Memory
679877		dooompy	Homework (CEOI22_homework)	C++17	100 / 100	400 ms	190076 KiB

Main

#include "bits/stdc++.h"

using namespace std;

void abc() {cout << endl;}
template <typename T, typename ...U> void abc(T a, U ...b) {
    cout << a << ' ', abc(b...);
}
template <typename T> void printv(T l, T r) {
    while (l != r) cout << *l << " \n"[++l == r];
}
template <typename A, typename B> istream& operator >> (istream& o, pair<A, B> &a) {
    return o >> a.first >> a.second;
}
template <typename A, typename B> ostream& operator << (ostream& o, pair<A, B> a) {
    return o << '(' << a.first << ", " << a.second << ')';
}
template <typename T> ostream& operator << (ostream& o, vector<T> a) {
    bool is = false;
    for (T i : a) {o << (is ? ' ' : '{'), is = true, o << i;}
    return o << '}';
}

#ifdef local
#define test(args...) abc("[" + string(#args) + "]", args)
#else
#define test(args...) void(0)
#endif

using ll = long long;

struct state {
    int l, r, ct;

};

string s;
vector <int> v;
map <int, int> mp;

state recurse(int l, int r) {
    if (l == r) {
        return {1, 1, 1};
    }

    int com = mp[l + 3];
    state a = recurse(l + 4, com - 1);
    state b = recurse(com + 1, r - 1);

    bool t = (s[ l + 2] == 'x');
    if (t) {
        return {a.l + b.l, max({a.r + b.ct, b.r, a.r, b.r + a.ct}), a.ct + b.ct};
    } else return {min(a.l, b.l), a.r + b.r - 1, a.ct + b.ct};
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
//    freopen("", "r", stdin);
//    freopen("", "w", stdout);

    cin >> s;

    for (int i = 0; i < s.size(); i++) {
        if (s[i] == '(')
            v.push_back(i);
        else if (s[i] == ',')
            mp[v.back()] = i;
        else if (s[i] == ')')
            v.pop_back();
    }

    state a = recurse(0, s.size() - 1);

    cout << a.r - a.l + 1;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:64:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |     for (int i = 0; i < s.size(); i++) {
      |                     ~~^~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 13 / 13
• Subtask 3: 13 / 13
• Subtask 4: 30 / 30
• Subtask 5: 34 / 34