Submission #1761754

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Source Code Expand

#include<bits/stdc++.h>
#define REP(x,y,z) for(int x=y;x<=z;x++)
#define FORD(x,y,z) for(int x=y;x>=z;x--)
#define MSET(x,y) memset(x,y,sizeof(x))
#define FOR(x,y) for(__typeof(y.begin()) x=y.begin();x!=y.end();x++)
#define F first
#define S second
#define MP make_pair
#define PB push_back
#define SZ size()
#define M 105
void RI(){}
template<typename... T>
void RI( int& head, T&... tail ) {
    scanf("%d",&head);
    RI(tail...);
}
using namespace std;
typedef long long LL;
int n;
LL A[M],B[M];
set<int> fact[M];
void addFact(int x,int a)
{
	for(int j=2*x; j<=n; j+=x)
	{
		B[j] += A[x]*a;
		
		if(a==1) fact[j].insert(x);
		else fact[j].erase(x);
	}
}
int main()
{
	while(~scanf("%d",&n))
	{
		REP(i,1,n) scanf("%lld",&A[i]);
		MSET(B, 0);
		REP(i,0,n) fact[i].clear();

		LL ans = 0;
		REP(i,1,n)
		{
			if (A[i]+B[i]>=0)
			{
				ans += A[i] + B[i];
				vector<int> tmp;
				for(int j:fact[i]) tmp.PB(j);
				for(int j:tmp) addFact(j, -1);
			}
			else
			{
				addFact(i, 1);
			}
		}
		printf("%lld\n", ans);
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:37:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   REP(i,1,n) scanf("%lld",&A[i]);
                                 ^

Judge Result