結果
問題 | No.817 Coin donation |
ユーザー |
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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; }