結果
| 問題 |
No.817 Coin donation
|
| コンテスト | |
| ユーザー |
mugen_1337
|
| 提出日時 | 2020-05-13 20:25:19 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 29 ms / 2,000 ms |
| コード長 | 1,127 bytes |
| コンパイル時間 | 2,054 ms |
| コンパイル使用メモリ | 194,496 KB |
| 最終ジャッジ日時 | 2025-01-10 10:48:26 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 14 |
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:44:11:
/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:34:25: note: ‘res’ was declared here
34 | ll lw=0,hi=10ll*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);
int n;ll k;cin>>n>>k;
vector<pair<ll,ll>> v(n);
rep(i,n){
cin>>v[i].first>>v[i].second;
}
auto check=[&](ll m){
ll cnt=0;
rep(i,n){
cnt+=max(0ll,min(m,v[i].second)-v[i].first+1);
}
return cnt>=k;
};
ll lw=0,hi=10ll*INF,res;
while(lw<=hi){
ll mid=(lw+hi)/2;
if(check(mid)){
res=mid;
hi=mid-1;
}else{
lw=mid+1;
}
}
cout<<res<<endl;
return 0;
}
mugen_1337