child: CouponItem( translate: CouponTrans(context), getCurrencyFormatted: (data) { return PriceTools.getCurrencyFormatted( data, model.currencyRate, currency: model.currency, )!; }, coupon: coupon, onSelect: (couponCode) { Navigator.of(context).pop(); widget.onSelect?.call(couponCode); }, email: email, isFromCart: widget.isFromCart, ), Fix overflow

#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <iomanip>
#include <algorithm>
#include <vector>
#include <string>
#include <map>
#include <set>
#include <cmath>
#include <cstring>
#include <queue>
#include <stack>
#include <cassert>
#include <climits>
#include <numeric>
#include <ctime>
#include <complex>

using namespace std;

typedef double lf;
typedef complex<lf> pt;
typedef long long ll;

const lf PI = acos(-1.0);
const ll INF = 1e18;

ll mul(ll a, ll b){
	if (a == 0) {
		return 0;
	}

	if (a == 1) {
		return b;
	}

	if (b <= LLONG_MAX / a) {
		return a * b