Cod sursa(job #2209848)

Utilizator flaviu_2001Craciun Ioan-Flaviu flaviu_2001 Data 4 iunie 2018 21:46:10
Problema Schi Scor 90
Compilator cpp Status done
Runda Arhiva de probleme Marime 2.61 kb
#include <bits/stdc++.h>

using namespace std;

class InParser {
private:
    FILE *fin;
    char *buff;
    int sp;

    char read_ch() {
        ++sp;
        if (sp == 4096) {
            sp = 0;
            fread(buff, 1, 4096, fin);
        }
        return buff[sp];
    }

public:
    InParser(const char* nume) {
        fin = fopen(nume, "r");
        buff = new char[4096]();
        sp = 4095;
    }

    InParser& operator >> (int &n) {
        char c;
        while (!isdigit(c = read_ch()) && c != '-');
        int sgn = 1;
        if (c == '-') {
            n = 0;
            sgn = -1;
        } else {
            n = c - '0';
        }
        while (isdigit(c = read_ch())) {
            n = 10 * n + c - '0';
        }
        n *= sgn;
        return *this;
    }
};

class OutParser {
private:
    FILE *fout;
    char *buff;
    int sp;

    void write_ch(char ch) {
        if (sp == 50000) {
            fwrite(buff, 1, 50000, fout);
            sp = 0;
            buff[sp++] = ch;
        } else {
            buff[sp++] = ch;
        }
    }
public:
    OutParser(const char* name) {
        fout = fopen(name, "w");
        buff = new char[50000]();
        sp = 0;
    }
    ~OutParser() {
        fwrite(buff, 1, sp, fout);
        fclose(fout);
    }

    OutParser& operator << (int vu32) {
        if(vu32 == -1){
            write_ch('-');
            write_ch('1');
        } else if (vu32 <= 9) {
            write_ch(vu32 + '0');
        } else {
            (*this) << (vu32 / 10);
            write_ch(vu32 % 10 + '0');
        }
        return *this;
    }

    OutParser& operator << (char ch) {
        write_ch(ch);
        return *this;
    }
    OutParser& operator << (const char *ch) {
        while (*ch) {
            write_ch(*ch);
            ++ch;
        }
        return *this;
    }
};

int n, v[30005], aib[30005], sol[30005];

void update(int idx, int val)
{
    while(idx <= n){
        aib[idx] += val;
        idx += (idx&(-idx));
    }
}

int read(int idx)
{
    int sum = 0;
    while(idx){
        sum += aib[idx];
        idx -= (idx&(-idx));
    }
    return sum;
}

int main()
{
    InParser fin ("schi.in");
    OutParser fout ("schi.out");
    fin >> n;
    for (int i = 1; i <= n; ++i)
        fin >> v[i];
    for (int i = n; i >= 1; --i){
        int x = v[i];
        int lo = 1, hi = n, m, ans;
        for (m = (lo+hi)>>1; lo <= hi; m = (lo+hi)>>1)
            if(m-read(m) >= x){
                ans = m;
                hi = m-1;
            }else lo = m+1;
        sol[ans] = i;
        update(ans, 1);
    }
    for (int i = 1; i <= n; ++i)
        fout << sol[i] << "\n";
    return 0;
}