Submission #964371

#	Time	Username	Problem	Language	Result	Execution time	Memory
964371		anango	Type Printer (IOI08_printer)	C++17	Compilation error	0 ms	0 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;
    vector<int> answers(n);
    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];
    for (int i=0; i<n; i++) {
        answers[i] = pref(v[i], mword);
    }
    vector<int> w;
    for (int i=0; i<n; i++) {
        w.push_back(i);
    }
    sort(w.begin(), w.end(), [&](const int s1, const int s2) {

        if (answers[s1]!=answers[s2]) {
            return answers[s1]<answers[s2];
        }
        return v[s1]<v[s2];
    });
    vector<string> v2(n);
    for (int i=0; i<n; i++) {
        v2[i] = v[w[i]];
    }
    int tot=0;
    vector<char> prints;
    string current;
    for (int i=0; i<n; i++) {
        int t=pref(current,v2[i]);
        while (current.size()>t) {
            prints.append('-');
            current.pop_back();
        }
        for (int j=current.size(); j<v2[i].size(); j++) {
            prints.append(v2[i][j]);
        }
        current = v2[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:27:21: 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]
   27 |         if (s.size()>ma) {
      |             ~~~~~~~~^~~
printer.cpp:56:30: 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]
   56 |         while (current.size()>t) {
      |                ~~~~~~~~~~~~~~^~
printer.cpp:57:20: error: 'class std::vector<char>' has no member named 'append'
   57 |             prints.append('-');
      |                    ^~~~~~
printer.cpp:60:37: 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]
   60 |         for (int j=current.size(); j<v2[i].size(); j++) {
      |                                    ~^~~~~~~~~~~~~
printer.cpp:61:20: error: 'class std::vector<char>' has no member named 'append'
   61 |             prints.append(v2[i][j]);
      |                    ^~~~~~
printer.cpp:51:9: warning: unused variable 'tot' [-Wunused-variable]
   51 |     int tot=0;
      |         ^~~