結果
| 問題 | No.734 Careful Engineer | 
| コンテスト | |
| ユーザー |  mugen_1337 | 
| 提出日時 | 2020-06-13 20:47:55 | 
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) | 
| 結果 | 
                                WA
                                 
                             | 
| 実行時間 | - | 
| コード長 | 997 bytes | 
| コンパイル時間 | 2,712 ms | 
| コンパイル使用メモリ | 191,492 KB | 
| 最終ジャッジ日時 | 2025-01-11 03:59:14 | 
| ジャッジサーバーID (参考情報) | judge3 / judge3 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 4 | 
| other | AC * 6 WA * 4 | 
コンパイルメッセージ
In file included from /usr/include/c++/13/istream:41,
                 from /usr/include/c++/13/sstream:40,
                 from /usr/include/c++/13/complex:45,
                 from /usr/include/c++/13/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:127,
                 from main.cpp:1:
In member function ‘std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits<char>]’,
    inlined from ‘int main()’ at main.cpp:40:11:
/usr/include/c++/13/ostream:204:25: warning: ‘res’ may be used uninitialized [-Wmaybe-uninitialized]
  204 |       { return _M_insert(__n); }
      |                ~~~~~~~~~^~~~~
main.cpp: In function ‘int main()’:
main.cpp:28:20: note: ‘res’ was declared here
   28 |     ll lw=0,hi=INF,res;
      |                    ^~~
            
            ソースコード
#include<bits/stdc++.h>
using namespace std;
#define ALL(x) x.begin(),x.end()
#define rep(i,n) for(int i=0;i<(n);i++)
#define debug(v) cout<<#v<<":";for(auto x:v){cout<<x<<' ';}cout<<endl;
#define INF 1000000000
#define mod 1000000007
using ll=long long;
const ll LINF=1001002003004005006ll;
int dx[]={1,0,-1,0};
int dy[]={0,1,0,-1};
// ll gcd(ll a,ll b){return b?gcd(b,a%b):a;}
template<class T>bool chmax(T &a,const T &b){if(a<b){a=b;return true;}return false;}
template<class T>bool chmin(T &a,const T &b){if(b<a){a=b;return true;}return false;}
signed main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    ll a,b,c;cin>>a>>b>>c;
    a*=60;
    c*=3600;
    if(a<=b){
        cout<<-1<<endl;
        return 0;
    }
    ll lw=0,hi=INF,res;
    while(lw<=hi){
        ll m=(lw+hi)/2;
        ll hand=a*m;
        ll machine=c+b*m;
        if(machine<=hand){
            res=m;
            hi=m-1;
        }else{
            lw=m+1;
        }
    }
    cout<<res<<endl;
    return 0;
}
            
            
            
        