Cod sursa(job #2221565)

Utilizator Horia14Horia Banciu Horia14 Data 14 iulie 2018 20:36:21
Problema Stramosi Scor 70
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.95 kb
#include<cstdio>
#include<cctype>
#define MAX_N 250000
#define BUF_SIZE 1 << 18
using namespace std;

int p[MAX_N+1], n, m, pos = BUF_SIZE;
char buf[BUF_SIZE];

inline char getChar(FILE* fin) {
    if(pos == BUF_SIZE) {
        fread(buf,1,BUF_SIZE,fin);
        pos = 0;
    }
    return buf[pos++];
}

inline int read(FILE* fin) {
    int res = 0;
    char c;
    do {
        c = getChar(fin);
    }while(!isdigit(c));
    do {
        res = 10*res + c - '0';
        c = getChar(fin);
    }while(isdigit(c));
    return res;
}

int main() {
    int i, x, j, k;
    FILE* fin, *fout;
    fin = fopen("stramosi.in","r");
    fout = fopen("stramosi.out","w");
    n = read(fin); m = read(fin);
    for(i = 1; i <= n; i++)
        p[i] = read(fin);
    for(i = 1; i <= m; i++) {
        x = read(fin); k = read(fin);
        for(j = 1; j <= k - 1 && x; j++)
            x = p[x];
        fprintf(fout,"%d\n",p[x]);
    }
    fclose(fin);
    fclose(fout);
    return 0;
}