Submission #13881928

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Source Code Expand

/*
AuThOr Gwj
*/
#include<bits/stdc++.h>
#define rb(a,b,c) for(int a=b;a<=c;++a)
#define rl(a,b,c) for(int a=b;a>=c;--a)
#define LL unsigned long long
#define IT iterator
#define PB push_back
#define II(a,b) make_pair(a,b)
#define FIR first
#define SEC second
#define FREO freopen("check.out","w",stdout)
#define rep(a,b) for(int a=0;a<b;++a)
#define KEEP while(1)
#define SRAND mt19937 rng(chrono::steady_clock::now().time_since_epoch().count())
#define random(a) rng()%a
#define ALL(a) a.begin(),a.end()
#define POB pop_back
#define ff fflush(stdout)
#define fastio ios::sync_with_stdio(false)
#define debug_pair(A) cerr<<A.FIR<<" "<<A.SEC<<endl;
using namespace std;
const int INF=0x3f3f3f3f;
typedef pair<int,int> mp;
typedef pair<mp,mp> superpair;
int n;
LL a[100000+2];
LL resu=1;
int main(){
	fastio;
	cin>>n;
	rb(i,1,n)
	{
		cin>>a[i];
	}
	sort(a+1,a+1+n);
	rb(i,1,n)
	{
		
		int Wei1,Wei2;
		Wei1=Wei2=0;
		LL A,B;
		A=resu,B=a[i];
		while(A>=10){
			A/=10;
			Wei1++;
		}
		while(B>=10){
			B/=10;
			Wei2++;
		}
		if(Wei1+Wei2>18){
			cout<<-1<<endl;
			return 0;
		}
		resu*=a[i];
		if(resu>(LL)(1e18)){
			cout<<-1<<endl;
			return 0;
		}
		if(resu<0){
			cout<<-1<<endl;
			return 0;
		}
	}
	if(resu>(LL)(1e18)){
		cout<<-1<<endl;
	}
	else{
		cout<<resu;
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:62:10: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
   62 |   if(resu<0){
      |      ~~~~^~

Judge Result