Can You Please give the hint to solve this problem

#1

Can You Please give the hint to solve this problem
https://codeforces.com/problemset/problem/499/A

#2

hello @cbcao263
this is a simple while loop problem.

start iterating from 1 .till the last important portion of movie (i.e rn)

now if current…current+x is not a part of best moment then take x step.
otherwise increment by one.

#include <cstdio>

int main()
{
    int no_of_interesting_portions, skip_step;
    scanf("%d %d", &no_of_interesting_portions, &skip_step);
 
    int current_minute = 1, no_of_watched_minutes = 0;
    for(int i = 1; i <= no_of_interesting_portions; i++)
    {
        int beginning_i, end_i;
        scanf("%d %d", &beginning_i, &end_i);
 
 
        no_of_watched_minutes += (beginning_i - current_minute)%skip_step + (end_i - (beginning_i - 1));
 
        current_minute = end_i + 1;
    }
 
    printf("%d\n", no_of_watched_minutes);
    return 0;
}
#3

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