#include <bits/stdc++.h> using namespace std; int main() { long long a, b, c; scanf("%lld %lld", &a, &b); c = a * b - a - b;

Nicole • 1天前

include <bits/stdc++.h>

using namespace std;

int main() {

long long a, b, c;
scanf("%lld %lld", &a, &b);
c = a * b - a - b;
printf("%lld", c);
return 0;

}

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