제출 #528018

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
528018		amukkalir	Self Study (JOI22_ho_t2)	C++17	0 / 100	197 ms	5440 KiB

Main

#include <bits/stdc++.h> 
using namespace std; 
typedef long long ll; 
 
#define prn printf
#define scn scanf
 
ll n, m; 
const int nax = 3e5; 
ll a[nax+5], b[nax+5]; 

bool ok (ll x) {
    ll jum = 0; 
    for(int i=0; i<n; i++) {
        //if(max(a[i], b[i]) < x) return false; 
        jum += ceil((double)x/max(a[i],b[i])); 
    }
    return jum == n; 
}

signed main () {
    scn("%lld %lld", &n, &m); 
    for(int i=0; i<n; i++) scn("%lld", &a[i]);
    for(int i=0; i<n; i++) scn("%lld", &b[i]);
    
    ll ans = 0; 
    ll lo = 0, hi = 1e18; 
    while(lo <= hi) {
        ll mid = (lo+hi)>>1; 
        if(ok(mid)) {
            ans = mid; 
            lo = mid+1; 
        } else {
            hi = mid-1; 
        }
    }

    prn("%lld", ans); 
}
 
/*
binser 
cek (x)
coba self study semua 
coba kalo nambahin dtg bsb erkurang ga harinya 
jumlahin harinya hrs less than or equal n*m

*/

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:22:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |     scn("%lld %lld", &n, &m);
      |        ^
Main.cpp:23:31: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |     for(int i=0; i<n; i++) scn("%lld", &a[i]);
      |                               ^
Main.cpp:24:31: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |     for(int i=0; i<n; i++) scn("%lld", &b[i]);
      |                               ^

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