Submission #1309664

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Source Code Expand

#include <bits/stdc++.h>
 
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define li long long
#define itn int
 
using namespace std;
 
inline int nxt(){
	int n;
	scanf("%d", &n);
	return n;
}

template <typename T>
ostream& operator <<(ostream& ostr, const vector<T>& a) {
	ostr << "(";
	for (size_t i = 0; i < a.size(); ++i) {
		if (i) {
			ostr << ", ";
		}
		ostr << a[i];
	}
	ostr << ")";
	return ostr;
}

const int mod = 1000000007;

long long pw(long long a, long long b) {
	long long res = 1;
	while (b) {
		if (b & 1ll) {
			res = res * a % mod;
		}
		b >>= 1;
		a = a * a % mod;
	}
	return res;
}

int main(){
	// int n = nxt();
	// vector<int> a(n);
	// for (int i = 0; i < n; ++i) {
	// 	a[i] = nxt();
	// }

	int n = nxt(), a = nxt(), b = nxt();
	if (n == 1) {
		if (a == b) {
			puts("1");
		} else {
			puts("0");
		}
	} else {
		if (a <= b) {
			cout << 1ll * (n - 2) * b - 1ll * (n - 2) * a + 1 << "\n";
		} else {
			puts("0");
		}
	}

	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int nxt()’:
./Main.cpp:12:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^

Judge Result