Submission #466951

#	Time	Username	Problem	Language	Result	Execution time	Memory
466951		XBoRickie	Savrsen (COCI17_savrsen)	C++11	120 / 120	1336 ms	39408 KiB

savrsen

#include "bits/stdc++.h"
#define MAXN 10000009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second

using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
int d[MAXN];
int main(){
	int a,b;
	ll ans=0;
	scanf("%d%d",&a,&b);
	ans+=(a==1);
	for(int i=2;i<=b;i++){
		d[i]+=i-1;
		if(i>=a)
			ans+=abs(d[i]);
		for(int j=i+i;j<=b;j+=i)
			d[j]-=i;	
	}
	printf("%lld\n",ans);
	return 0;
}

Compilation message (stderr)

savrsen.cpp: In function 'int main()':
savrsen.cpp:23:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |  scanf("%d%d",&a,&b);
      |  ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 120 / 120