Submission #2637821

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#include <bits/stdc++.h>
using namespace std;

#define NDEBUG
#ifdef DEBUG
#include "../cout11.h"
#undef NDEBUG
#endif
#include <cassert>

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> ii;
typedef pair<ll,ll> llll;
typedef pair<double,double> dd;

typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef vector<ii> vii;
typedef vector<vector<ii>> vvii;
typedef vector<ll> vll;

#define sz(a)  int((a).size())
#define pb  push_back
#define FOR(var,from,to) for(int var=(from);var<=(to);++var)
#define rep(var,n)  for(int var=0;var<(n);++var)
#define rep1(var,n)  for(int var=1;var<=(n);++var)
#define repC2(vari,varj,n)  for(int vari=0;vari<(n)-1;++vari)for(int varj=vari+1;varj<(n);++varj)
#define ALL(c)  (c).begin(),(c).end()
#define RALL(c)  (c).rbegin(),(c).rend()
#define tr(i,c)  for(auto i=(c).begin(); i!=(c).end(); ++i)
#define found(s,e)  ((s).find(e)!=(s).end())
#define mset(arr,val)  memset(arr,val,sizeof(arr))
#define mid(x,y) ((x)+((y)-(x))/2)
#define IN(x,a,b) ((a)<=(x)&&(x)<=(b))


inline ll span(string& s, int from, int to){
    ll x = 0;
    for (int i=from; i<to; ++i) {
        x = x * 10 + (int)(s[i] - '0');
    }
    return x;
}
inline ll times(int len){
    if (len == 0) return 1;
    return 1 << (len-1);
    /*
    if (len == 1) return 1;
    if (len == 2) return 2; // 2, 1*1
    if (len == 3) return 4; // 3, 12, 21, 1*1
    if (len == 4) return 8; // 4 13 22 31 112 121 211 1111
    // sep0, sep1, sep2, sep3
    for (int sep=0; sep<=len-1; ++sep) {
        // n=len-1 k=sep
        // nCkの和、そりゃ2^n = 2^(len-1)に決まってるだろ
    }
    return 1 << (len-1);
    */
}

ll solve(string& s) {
    int N = s.size();
    ll ans = 0;
    repC2(i,j,N+1){
        // [区間i,j]の出現回数
        // j-i + i + N-j = N
        ans += span(s,i,j) * times(i) * times(N-j);
    }
    return ans;
}

int main() {
    string s; cin >> s;
    cout << solve(s) << endl;
    return 0;
}

Submission Info

Submission Time
Task C - たくさんの数式 / Many Formulas
User naoya_t
Language C++14 (GCC 5.4.1)
Score 300
Code Size 2045 Byte
Status
Exec Time 1 ms
Memory 256 KB

Test Cases

Set Name Score / Max Score Test Cases
Sample 0 / 0
All 300 / 300 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, sample_01.txt, sample_02.txt
Case Name Status Exec Time Memory
01.txt 1 ms 256 KB
02.txt 1 ms 256 KB
03.txt 1 ms 256 KB
04.txt 1 ms 256 KB
05.txt 1 ms 256 KB
06.txt 1 ms 256 KB
07.txt 1 ms 256 KB
08.txt 1 ms 256 KB
09.txt 1 ms 256 KB
10.txt 1 ms 256 KB
sample_01.txt 1 ms 256 KB
sample_02.txt 1 ms 256 KB