Submission #1948570
Source Code Expand
#include <bits/stdc++.h>
using namespace std;
using VI = vector<int>;
using VVI = vector<VI>;
using PII = pair<int, int>;
using LL = long long;
using VL = vector<LL>;
using VVL = vector<VL>;
using PLL = pair<LL, LL>;
using VS = vector<string>;
#define ALL(a) begin((a)),end((a))
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define SZ(a) int((a).size())
#define SORT(c) sort(ALL((c)))
#define RSORT(c) sort(RALL((c)))
#define UNIQ(c) (c).erase(unique(ALL((c))), end((c)))
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define FF first
#define SS second
#define DUMP(x) cout<<#x<<":"<<(x)<<endl
template<class S, class T>
istream& operator>>(istream& is, pair<S,T>& p){
return is >> p.FF >> p.SS;
}
template<class T>
istream& operator>>(istream& is, vector<T>& xs){
for(auto& x: xs)
is >> x;
return is;
}
template<class S, class T>
ostream& operator<<(ostream& os, const pair<S,T>& p){
return os << p.FF << " " << p.SS;
}
template<class T>
void maxi(T& x, T y){
if(x < y) x = y;
}
template<class T>
void mini(T& x, T y){
if(x > y) x = y;
}
const double EPS = 1e-10;
const double PI = acos(-1.0);
const LL MOD = 1e9+7;
int main(){
cin.tie(0);
ios_base::sync_with_stdio(false);
LL N, H;
cin >> N >> H;
vector<LL> xs(N);
LL mx = 0;
REP(i,N){
LL a;
cin >> a >> xs[i];
maxi(mx, a);
}
RSORT(xs);
LL ans = H;
REP(i,N){
H -= xs[i];
mini(ans, i+1 + (H>0? (H+mx-1)/mx: 0ll));
if(H <= 0) break;
}
cout << ans << endl;
return 0;
}
Submission Info
Submission Time |
|
Task |
D - Katana Thrower |
User |
okaduki |
Language |
C++14 (GCC 5.4.1) |
Score |
400 |
Code Size |
1649 Byte |
Status |
AC |
Exec Time |
25 ms |
Memory |
1024 KB |
Judge Result
Set Name |
Sample |
All |
Score / Max Score |
0 / 0 |
400 / 400 |
Status |
|
|
Set Name |
Test Cases |
Sample |
a01, a02, a03, a04 |
All |
a01, a02, a03, a04, b05, b06, b07, b08, b09, b10, b11, b12, b13, b14, b15, b16, b17, b18, b19, b20, b21, b22, b23, b24 |
Case Name |
Status |
Exec Time |
Memory |
a01 |
AC |
1 ms |
256 KB |
a02 |
AC |
1 ms |
256 KB |
a03 |
AC |
1 ms |
256 KB |
a04 |
AC |
1 ms |
256 KB |
b05 |
AC |
1 ms |
256 KB |
b06 |
AC |
25 ms |
1024 KB |
b07 |
AC |
1 ms |
256 KB |
b08 |
AC |
24 ms |
1024 KB |
b09 |
AC |
1 ms |
256 KB |
b10 |
AC |
1 ms |
256 KB |
b11 |
AC |
1 ms |
256 KB |
b12 |
AC |
1 ms |
256 KB |
b13 |
AC |
15 ms |
1024 KB |
b14 |
AC |
14 ms |
1024 KB |
b15 |
AC |
14 ms |
1024 KB |
b16 |
AC |
15 ms |
1024 KB |
b17 |
AC |
23 ms |
1024 KB |
b18 |
AC |
21 ms |
1024 KB |
b19 |
AC |
17 ms |
1024 KB |
b20 |
AC |
19 ms |
1024 KB |
b21 |
AC |
22 ms |
1024 KB |
b22 |
AC |
21 ms |
1024 KB |
b23 |
AC |
1 ms |
256 KB |
b24 |
AC |
2 ms |
256 KB |