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Submission #151570

# Submission time Handle Problem Language Result Execution time Memory
151570 2019-09-03T15:04:48 Z leduykhongngu HicCup (FXCUP4_hiccup) C++17
24 / 100
 59 ms 7788 KB 
#include <cstdio>
#include <iostream>
#include <cstring>
#include <stack>
#include <cassert>
using namespace std;

string S = "";
int n;

bool Check(int lim)
{
    int cntCur = 0;
    stack<int> cnt;
    stack<char> st;
    #define vedify(x) if ((x) == 0) return false;
    char pre = '#';
    for (char x : S) {
        if (x != '!') {
            if (cntCur >= lim) {
                while (cntCur >= lim) {
                    vedify(st.size() >= 2);
                    vedify(st.top() == 'C');
                    st.pop();
                    vedify(st.top() == 'H');
                    st.pop();
                    cntCur -= lim;
                    if (cntCur > 0) {
                        if (st.size() == 0) cntCur = 0;
                        else if (st.top() == 'C') {
                            assert(cnt.size() >= 0);
                            cntCur += cnt.top();
                            cnt.pop();
                        }
                        else if (st.top() == 'H') {
                            cntCur = 0;
                        }
                    }
                }
                cnt.push(cntCur);
                // cerr << cntCur << endl;
                // if (x == '#') {
                //     cerr << "lim = "  << lim << endl;
                //     cerr << st.size() << ' ';
                //     while (st.size()) {
                //         cerr << st.top() << ' ';
                //         st.pop();
                //     }
                // }
                if (x == '#' && st.size() == 0) return true;
                if (x == '#') return false;
            }
            else { //cntCur < lim
                if (pre == '!')
                    cnt.push(cntCur);
                cntCur = 0;
            }
            if (x == 'H')
                st.push(x);
            else { //x == 'C'
                vedify(st.size() >= 1 && st.top() == 'H');
                st.push(x);
            }
        }
        else { //x == '!'
            vedify(st.size() >= 2 && st.top() == 'C');
            ++cntCur;
        }
        pre = x;
    }
    assert(-1);
    return true;
}

int HicCup(std::string tmp)
{
    for (int i = 0; i < tmp.length(); ++i)
    {
        S.push_back(tmp[i]);
        if (tmp[i] == 'C') S.push_back('!');
    }
    n = S.length();
    S.push_back('#');
//    cout << Check(1);
//    for (int i = 1; i <= 1; ++i)
//        cout << Check(i) << endl;
    int lef = 1, rig = n, ans = -1;
    while (lef <= rig)
    {
        int mid = (lef + rig)/2;
        if (Check(mid))
        {
            ans = max(ans, mid);
            lef = mid + 1;
        }
        else rig = mid - 1;
    }
    if (ans != -1) --ans;
    return ans;
}

Compilation message

hiccup.cpp: In function 'int HicCup(std::__cxx11::string)':
hiccup.cpp:77:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < tmp.length(); ++i)
                     ~~^~~~~~~~~~~~~~

Subtask #1
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 4 ms 504 KB Output is correct
5 Correct 45 ms 7788 KB Output is correct
6 Correct 27 ms 6324 KB Output is correct
7 Correct 27 ms 6320 KB Output is correct
8 Correct 44 ms 7788 KB Output is correct
9 Correct 44 ms 7788 KB Output is correct
10 Correct 28 ms 6320 KB Output is correct
11 Correct 2 ms 252 KB Output is correct

Subtask #2
0 / 76.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 4 ms 504 KB Output is correct
5 Correct 45 ms 7788 KB Output is correct
6 Correct 27 ms 6324 KB Output is correct
7 Correct 27 ms 6320 KB Output is correct
8 Correct 44 ms 7788 KB Output is correct
9 Correct 44 ms 7788 KB Output is correct
10 Correct 28 ms 6320 KB Output is correct
11 Correct 28 ms 6320 KB Output is correct
12 Correct 32 ms 6320 KB Output is correct
13 Correct 23 ms 6320 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 19 ms 6320 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 4 ms 760 KB Output is correct
19 Correct 42 ms 6368 KB Output is correct
20 Correct 31 ms 6340 KB Output is correct
21 Correct 59 ms 6324 KB Output is correct
22 Incorrect 59 ms 5148 KB Output isn't correct
23 Halted 0 ms 0 KB -