oj.uz

Submission #528054

# Submission time Handle Problem Language Result Execution time Memory
528054 2022-02-19T05:09:20 Z amukkalir Self Study (JOI22_ho_t2) C++17
25 / 100
 98 ms 6220 KB 
#include <bits/stdc++.h> 
using namespace std; 
typedef long long ll; 

#define prn printf
#define scn scanf

const int nax = 3e5; 
int n, m; 
ll a[nax+5], b[nax+5]; 

unsigned long long updiv(ll a, ll b) {
    ll ret = a/b; 
    if(ret*b < a) ret++; 
    return ret; 
}

bool ok (ll x) {
    unsigned long long cnt = 0;
    for(int i=0; i<n; i++) {
        cnt += updiv(x, a[i]); 
        if(cnt > n*m) return false; 
    }
    return cnt <= n*m; 
}

signed main () {
    scn("%d%d", &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); 
}

/*
dari 3e5 slot 
buat setiap mapel mau study berapa kali 
*/

Compilation message

Main.cpp: In function 'bool ok(ll)':
Main.cpp:22:16: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare]
   22 |         if(cnt > n*m) return false;
      |            ~~~~^~~~~
Main.cpp:24:16: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare]
   24 |     return cnt <= n*m;
      |            ~~~~^~~~~~
Main.cpp: In function 'int main()':
Main.cpp:28:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |     scn("%d%d", &n,&m);
      |        ^
Main.cpp:29:31: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |     for(int i=0; i<n; i++) scn("%lld", &a[i]);
      |                               ^
Main.cpp:30:31: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     for(int i=0; i<n; i++) scn("%lld", &b[i]);
      |                               ^

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 280 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 284 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 62 ms 4120 KB Output is correct
10 Correct 39 ms 2628 KB Output is correct
11 Correct 26 ms 2036 KB Output is correct
12 Correct 22 ms 1732 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 304 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 3 ms 436 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 59 ms 5292 KB Output is correct
22 Correct 93 ms 5680 KB Output is correct
23 Correct 98 ms 6220 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 280 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 284 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 62 ms 4120 KB Output is correct
10 Correct 39 ms 2628 KB Output is correct
11 Correct 26 ms 2036 KB Output is correct
12 Correct 22 ms 1732 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 304 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 3 ms 436 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 59 ms 5292 KB Output is correct
22 Correct 93 ms 5680 KB Output is correct
23 Correct 98 ms 6220 KB Output is correct
24 Incorrect 22 ms 1356 KB Output isn't correct
25 Halted 0 ms 0 KB -

Subtask #5
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 280 KB Output isn't correct
2 Halted 0 ms 0 KB -