【Codeforces Round #389】Codeforces 752A Santa Claus and a Place in a Class

Santa Claus is the first who came to the Christmas Olympiad, and he is
going to be the first to take his place at a desk! In the classroom
there are n lanes of m desks each, and there are two working places at
each of the desks. The lanes are numbered from 1 to n from the left to
the right, the desks in a lane are numbered from 1 to m starting from
the blackboard. Note that the lanes go perpendicularly to the
blackboard, not along it (see picture).

The organizers numbered all the working places from 1 to 2nm. The
places are numbered by lanes (i. e. all the places of the first lane
go first, then all the places of the second lane, and so on), in a
lane the places are numbered starting from the nearest to the
blackboard (i. e. from the first desk in the lane), at each desk, the
place on the left is numbered before the place on the right. The
picture illustrates the first and the second samples.

Santa Clause knows that his place has number k. Help him to determine
at which lane at which desk he should sit, and whether his place is on
the left or on the right! Input

The only line contains three integers n, m and k (1 ≤ n, m ≤ 10 000,
1 ≤ k ≤ 2nm) — the number of lanes, the number of desks in each lane
and the number of Santa Claus’ place. Output

Print two integers: the number of lane r, the number of desk d, and a
character s, which stands for the side of the desk Santa Claus. The
character s should be “L”, if Santa Clause should sit on the left, and
“R” if his place is on the right.

模拟。

#include<cstdio>#include<cstring>#include<algorithm>using namespace std;int main(){    int m,n,k,x;    scanf("%d%d%d",&n,&m,&k);    x=(k+1)/2;    printf("%d %d ",(x-1)/m+1,(x%m)?x%m:m);    if (k&1) printf("L\n");    else printf("R\n");}