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Submission #7782

# Submission time Handle Problem Language Result Execution time Memory
7782 2014-08-19T10:07:25 Z gs14004 다각형 (GA5_polygon) C++
100 / 100
 0 ms 1088 KB 
#include <cstdio>

long long f(long long p){
    if(p<4) return 0;
    p >>= 1;
    long long res = p*(p+1)/2;
    return res-1;
}

int main(){
    long long s,e;
    scanf("%lld %lld",&s,&e);
    printf("%lld",2*(f(e)-f(s-1)));
}

Subtask #1
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 1088 KB Output is correct
2 Correct 0 ms 1088 KB Output is correct
3 Correct 0 ms 1088 KB Output is correct
4 Correct 0 ms 1088 KB Output is correct
5 Correct 0 ms 1088 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 1088 KB Output is correct
2 Correct 0 ms 1088 KB Output is correct
3 Correct 0 ms 1088 KB Output is correct
4 Correct 0 ms 1088 KB Output is correct
5 Correct 0 ms 1088 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 1088 KB Output is correct
2 Correct 0 ms 1088 KB Output is correct
3 Correct 0 ms 1088 KB Output is correct
4 Correct 0 ms 1088 KB Output is correct
5 Correct 0 ms 1088 KB Output is correct