Submission #334964

#	Time	Username	Problem	Language	Result	Execution time	Memory
334964		ronnith	Simfonija (COCI19_simfonija)	C++14	44 / 110	52 ms	3456 KiB

simfonija

#include <bits/stdc++.h>
#define trav(a, b) for(auto a : b)
#define mk make_pair
#define f first
#define s second
#define vi vector<int>
#define pb push_back
typedef long long ll;
using namespace std;

void re(vector<ll*> arr){
	trav(e, arr)scanf("%lld", e);
}

ll n, k;
ll a[100000], b[100000];

ll check(ll x){
	ll ans = 0;
	for(int i = 0;i < n;i ++){
		ans += abs(a[i] + x - b[i]);
	}
	return ans;
}

int main(){
	// ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	re({&n,&k});
	for(int i = 0;i < n;i ++){
		re({&a[i]});
	}
	for(int i = 0;i < n;i ++){
		re({&b[i]});
	}
	ll hi = 1e13;
	ll lo = -1e13;
	ll ans = LONG_LONG_MAX;
	while(hi >= lo){
		ll g1 = lo + (hi - lo) / 2;
		ll g2 = g1 + 1;
		ll a1 = check(g1), a2 = check(g2);
		if(a1 == a2){
			ans = a1;
			break;
		} else if(a1 < a2){
			ans = min(ans, a1);
			hi = g1 - 1;
		} else if(a1 > a2){
			ans = min(ans, a2);
			lo = g1 + 1;
		}
	}
	printf("%lld\n", ans);
	return 0;
}

Compilation message (stderr)

simfonija.cpp: In function 'void re(std::vector<long long int*>)':
simfonija.cpp:12:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   12 |  trav(e, arr)scanf("%lld", e);
      |              ~~~~~^~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 11 / 11
• Subtask 5: 0 / 11
• Subtask 6: 0 / 11
• Subtask 7: 0 / 11
• Subtask 8: 0 / 11
• Subtask 9: 0 / 11
• Subtask 10: 0 / 11