提出 #75487014

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ソースコード 拡げる

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<int>;
using vll = vector<ll>;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
#define all(x) (x).begin(), (x).end()
#define pb push_back

template<class T> inline bool chmax(T& a, T b) { return a < b ? a = b, 1 : 0; }
template<class T> inline bool chmin(T& a, T b) { return a > b ? a = b, 1 : 0; }

const int MOD = 1e9 + 7;

void solve() {
    int n;cin>>n;
    vector<int> a(n);
    for(int i=0;i<n;i++)cin>>a[i];
    map<int,int>freq;
    for(int x:a)freq[x]++;
    vector<int> b;
    if(freq.count(0))b.pb(freq[0]);
    int prev=0;
    for(auto&[val,cnt]:freq){
        if(val==0)continue;
        b.push_back(val-prev);
        b.push_back(cnt);
        prev=val;

    }
    int win=-1;
    for(int i=0;i<b.size();i++){
        if(b[i]>1){
            win=(i%2);
            break;
        }
    }
    if(win==-1){
        win=(b.size()%2==1)?0:1;

    }
    if(win==0){
        cout<<"Alice\n";
    }else cout<<"Bob\n";

    
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int tt = 1;
    cin>>tt;
    while (tt--) {
        solve();
    }

    return 0;
}

提出情報

コンパイルエラー

./Main.cpp: In function 'void solve()':
./Main.cpp:33:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |     for(int i=0;i<b.size();i++){
      |                 ~^~~~~~~~~

ジャッジ結果