Submission #2778

#TimeUsernameProblemLanguageResultExecution timeMemory
2778mhkim4886다각형 (GA5_polygon)C++98
0 / 100
0 ms1088 KiB
#include <stdio.h> int main() { int a, b; scanf("%d %d", &a, &b); if(a % 2 == 1) a++; if(b % 2 == 1) b--; int answer; if(((b - a) / 2 + 1) % 2 == 0) answer = (a + b) * ((b-a)/2+1) / 2; else answer = a + (a+2 + b) * (b-a) / 4; printf("%d", answer); }
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