提出 #69831521

---

ソースコード 拡げる

#include <bits/stdc++.h>
#ifdef LOCAL
#include "debug.h"
#else
#define dbg(...) 0
#endif
using namespace std;
using ll = long long;
using db = double;
const ll N = 1e6 + 5;
const ll md = 998244353;
const ll MOD = 1e9 + 7;
const ll INF = 0x3f3f3f3f3f3f3f;
const db PI = acos(-1);
const db eps = 1e-6;
const db E = 2.718281828459045;
typedef pair<ll, ll> PLL;
#define fi first
#define se second

void solve()
{
    string s;
    cin >> s;
    char c;
    map<char, ll> mp;
    for (ll i = 0; i < s.size(); i++)
        mp[s[i]]++;
    for (auto f : mp)
    {
        if (f.se == 1)
            c = f.fi;
    }
    cout << c << '\n';
}
int main()
{
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int T;
    T = 1;
    // cin>>T;
    while (T--)
    {
        solve();
    }
}

提出情報

コンパイルエラー

Main.cpp: In function ‘void solve()’:
Main.cpp:27:22: warning: comparison of integer expressions of different signedness: ‘ll’ {aka ‘long long int’} and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   27 |     for (ll i = 0; i < s.size(); i++)
      |                    ~~^~~~~~~~~~
Main.cpp:34:18: warning: ‘c’ may be used uninitialized [-Wmaybe-uninitialized]
   34 |     cout << c << '\n';
      |                  ^~~~
Main.cpp:25:10: note: ‘c’ was declared here
   25 |     char c;
      |          ^

ジャッジ結果