Submission #1004462

#	Time	Username	Problem	Language	Result	Execution time	Memory
1004462		vjudge1	Horses (IOI15_horses)	C++17	Compilation error	0 ms	0 KiB

horses

#include <bits/stdc++.h>
using namespace std;
#define ll long long 
#define f first
#define s second
#define pb push_back
#define pf push_front
#define pi pair<int,int>
#define vi vector<int>

int n ;
vi x, y;

const int mod = 1e9+7;

ll init(int N, int X[], int Y[]){
    n = N;
    x.resize(N);
    y.resize(N);
    for(int i =0; i < n; i++){
        x[i] =X[i];
        y[i] = Y[i];
    }
    
    ll final = 0;
    
  
    ll ans = 0;
    ll have = 1;
    ll cnt = 0, left = 0;
    ll prev =1;
    ll ccnt, cleft, cl;
    
   for(int i = 1; i <= n; i++){
     
        have = ((have* x[i-1]));
        while(have>=mod){
            ccnt++;
            have %=mod;
        }
        while(y[i-1]>=mod){
            cl++;
            y[i-1]%=mod;
        }
        ll hold = have*y[i-1];
        if(hold >=mod){
            ccnt++;
        }
    
        if(ccnt> cnt){
            cnt = ccnt+cl;
            left = hold;
        }
        else if(ccnt==cnt && hold> left){
            cnt = ccnt+cl;
            left = hold;
        }
      
        
         
   }
   return left;

}


ll updateX(int pos, int val){
    
    x[pos]=val;
      ll ans = 0;
    ll have = 1;
   for(int i = 1; i <= n; i++){
        have *= x[i-1];
        ans = max(ans, have*(y[i-1]));
         
   }
   return ans%mod;
}

Compilation message (stderr)

horses.cpp: In function 'long long int init(int, int*, int*)':
horses.cpp:25:8: warning: unused variable 'final' [-Wunused-variable]
   25 |     ll final = 0;
      |        ^~~~~
horses.cpp:28:8: warning: unused variable 'ans' [-Wunused-variable]
   28 |     ll ans = 0;
      |        ^~~
horses.cpp:31:8: warning: unused variable 'prev' [-Wunused-variable]
   31 |     ll prev =1;
      |        ^~~~
horses.cpp:32:14: warning: unused variable 'cleft' [-Wunused-variable]
   32 |     ll ccnt, cleft, cl;
      |              ^~~~~
horses.cpp:38:17: warning: 'ccnt' may be used uninitialized in this function [-Wmaybe-uninitialized]
   38 |             ccnt++;
      |             ~~~~^~
/usr/bin/ld: /tmp/ccFhYsuU.o: in function `main':
grader.c:(.text.startup+0x16d): undefined reference to `updateY(int, int)'
collect2: error: ld returned 1 exit status