Mathematics codeforces Round #308 (Div. 2) B. Vanya and Books

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1 /*2 water problem: To find the total number of numbers, open long long unexpectedly WA several times, also did not change what again:)3 */4#include <cstdio>5#include <iostream>6#include <algorithm>7#include <cstring>8#include <cmath>9#include <vector>Ten#include <string> One#include <queue> A#include <map> -#include <Set> - using namespacestd; the  -typedefLong Longll; - Const intMAXN = 1e2 +Ten; - Const intINF =0x3f3f3f3f; +  - intMainvoid)//codeforces Round #308 (Div. 2) B. Vanya and Books + { A     //freopen ("b.in", "R", stdin); at  - ll N; -      while(SCANF ("%i64d", &n) = =1) -     { -         intLen =0; ll tmp =N; -          while(TMP) in         { -TMP/=Ten; len++; to         } +  -ll ans =0; ll x =9; the          for(intI=1; i<=len-1; ++i) *         { $Ans + = x * i; X *=Ten;Panax Notoginseng         } -ll y =1; the          for(intI=1; i<=len-1; ++i) y *=Ten; +  AAns + = (n-y +1) *Len; theprintf ("%i64d\n", ans); +     } -  $  $     return 0; -}

Mathematics codeforces Round #308 (Div. 2) B. Vanya and Books