Submission #2742

#TimeUsernameProblemLanguageResultExecution timeMemory
2742kriii다각형 (GA5_polygon)C++98
0 / 100
0 ms1088 KiB
#include <stdio.h> int main() { long long a,b,c; scanf ("%lld %lld",&a,&b); if (a <= 2 && 2 <= b) c -= 2; a = (a + 1) / 2; b = b / 2; c += b * (b + 1) - a * (a - 1); printf ("%lld",c); return 0; }
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