Submission #964357

#	Time	Username	Problem	Language	Result	Execution time	Memory
964357		anango	Type Printer (IOI08_printer)	C++17	0 / 100	194 ms	262144 KiB

printer

#include <bits/stdc++.h>
#define int long long
using namespace std;

int pref(string s1, string s2) {
    for (int i=0; i<s1.size(); i++) {
        if (i>=s2.size() || s1[i]!=s2[i]) {
            return i;
        }
    }
    return min(s1.size(), s2.size());
}

signed main() {
    freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
    int n;
    cin >> n;
    vector<string> v;
    int ma=0;
    int mpos=-1;
    for (int i=0; i<n; i++) {
        string s;
        cin >> s;
        v.push_back(s);
        if (s.size()>ma) {
            ma=s.size();
            mpos=i;
        }
    }
    string mword=v[mpos];
    
    sort(v.begin(), v.end(), [=](const string s1, const string s2) {
        int x=pref(s1,mword);
        int y=pref(s2,mword);
        if (x!=y) {
            return x<y;
        }
        return s1<s2;
    });
    int tot=0;
    vector<char> prints;
    string current;
    for (int i=0; i<n; i++) {
        while (current!=v[i].substr(0,current.size())) {
            prints.push_back('-');
            current.pop_back();
        }
        for (int j=current.size(); j<v[i].size(); j++) {
            prints.push_back(v[i][j]);
        }
        current = v[i];


        prints.push_back('P');
    }
    cout << prints.size() << endl;
    for (auto i:prints) {
        cout << i << endl;
    }
}

Compilation message (stderr)

printer.cpp: In function 'long long int pref(std::string, std::string)':
printer.cpp:6:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 |     for (int i=0; i<s1.size(); i++) {
      |                   ~^~~~~~~~~~
printer.cpp:7:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 |         if (i>=s2.size() || s1[i]!=s2[i]) {
      |             ~^~~~~~~~~~~
printer.cpp: In function 'int main()':
printer.cpp:26:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   26 |         if (s.size()>ma) {
      |             ~~~~~~~~^~~
printer.cpp:49:37: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |         for (int j=current.size(); j<v[i].size(); j++) {
      |                                    ~^~~~~~~~~~~~
printer.cpp:41:9: warning: unused variable 'tot' [-Wunused-variable]
   41 |     int tot=0;
      |         ^~~
printer.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
printer.cpp:16:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |  freopen("output.txt", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10