Codeforces Round #492 (Div. 2)

A.

/*
从大往小依次除
*/

#include<cstdio>
#include<algorithm>
#include<cstring>
#include<iostream>
#include<set>
#include<map>
#define M
#define ll long long

using namespace std;
int read() {
    int nm = 0, f = 1;
    char c = getchar();
    for(; !isdigit(c); c = getchar()) if(c == '-') f = -1;
    for(; isdigit(c); c = getchar()) nm = nm * 10 + c - '0';
    return nm * f;
}
int main() {
    int n = read(), ans = 0;
    ans += n / 100;
    n %= 100;
    ans += n / 20;
    n %= 20;
    ans += n / 10;
    n %= 10;
    ans += n / 5;
    n %= 5;
    ans += n;
    cout << ans;

    return 0;
}

B.