提出 #59866463

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ソースコード 拡げる

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define eb emplace_back
int find_consecutive(char c, string& s, int pos) {
    int count = 1;
    int i = pos+1;
    while (i < s.size()) {
        if (c == s[i]) {
            count++;
            i++;
        } else {
            return count;
        }
    }
    return count;
}

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    int n;
    cin >> n;
    int k;
    cin >> k;
    vector<pair<char, int>> v;
    string s;
    int count;
    int countk=0;
    int k_pos;
    cin >> s;
    for(int i = 0; i < n; ) {
        if(s[i]=='0') {
            count = find_consecutive('0', s, i);
            i+= count;
            v.eb(make_pair('0',count));
            count = 0;
        }
        else if(s[i]=='1') {
            count = find_consecutive('1', s, i);
            i+= count;
            countk++;
            if(countk==k) {
                v[k_pos].second+=count;
            } else if(countk==k-1){
                k_pos = v.size();
                v.eb(make_pair('1',count));
            } else {
                v.eb(make_pair('1',count));
            }
            count = 0;
        }
    }
    for(auto p : v) {
        for(int i = 0; i < p.second; i++) {
            cout << ((p.first=='1')? '1' : '0');
        }
    }
    cout << endl;
    return 0;
}

提出情報

コンパイルエラー

Main.cpp: In function ‘int find_consecutive(char, std::string&, int)’:
Main.cpp:8:14: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
    8 |     while (i < s.size()) {
      |            ~~^~~~~~~~~~
Main.cpp: In function ‘int main()’:
Main.cpp:45:24: warning: ‘k_pos’ may be used uninitialized [-Wmaybe-uninitialized]
   45 |                 v[k_pos].second+=count;
      |                        ^
Main.cpp:31:9: note: ‘k_pos’ was declared here
   31 |     int k_pos;
      |         ^~~~~

ジャッジ結果