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https://github.com/Kiritow/OJ-Problems-Source.git
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17 lines
325 B
C++
17 lines
325 B
C++
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#include <stdio.h>
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int main(){
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double t, i;
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double m, n, a, b;
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scanf("%lf", &t);
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while(t--){
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scanf("%lf %lf", &m, &n);
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a = 1; b = 1;
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for(i = 1; i <= n; i++, m--){
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a *= m;
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b *= i;
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}
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printf("%.0lf\n", a / b);
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}
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return 0;
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}
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