24 lines
428 B
C
24 lines
428 B
C
#include <stdio.h>
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#define sqr(x) ((x) * (x))
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int main() {
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long long t, n, p, diff, u, v;
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scanf("%lld", &t);
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while(t--) {
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scanf("%lld %lld", &n, &p);
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if (n < 3) {
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printf("%lld\n", p * p * p);
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continue;
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}
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diff = p - n;
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if (diff % 2) {
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u = n / 2, v = diff/2;
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printf("%lld\n", (u+v*3+2)*(u+v*3+3) + v*(v+1)*3 + 1);
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} else {
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printf("%lld\n", sqr(p/2 + diff + 1) + sqr(diff)*3/4);
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}
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}
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return 0;
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}
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