Kyselyt

input/code.cpp: In function 'int main(int, char**)':
input/code.cpp:16:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &q);
                 ^
input/code.cpp:20:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%ld", &n);
                   ^

#include "stdio.h"
#include "stdlib.h"
#include <math.h>

long loc(long);
long power(int, int);
long loc10(int);
void to10nm(long, int *, long *);
void getn(long, int *);
int getnum(long);
void getlocn(long, int *);

int main(int argc, char ** argv){

	int q;
	scanf("%d", &q);

	for (int i = 0; i < q; i++){
		long int n;
		scanf("%ld", &n);
		printf("%d\n", getnum(n));
	}

	return 0;
}

long loc(long num){
	int n;
	long m;
	to10nm(num, &n, &m);

	return loc10(n) + (n+1) * m;
}

long power(int x, int n){
	return (long)pow((double)x, (double)n);
}

long loc10(int n){
	long sum = 0;
	for (int i = n; i > 0; i--){
		sum += (power(10, i-1) * i);
	}
	sum *= 9;
	return sum;	
}

void to10nm(long num, int * n, long * m){
	getn(num, n);
	*m = num - power(10, *n);
}
void getlocn(long num, int * n)
{
	*n = -1;
	for (int i = 17; i >= 0; i--)
	{
		if(num >= loc10(i)){
			*n = i;
			break;
		}
	}
}

void getn(long num, int * n){
	for (int i = 18; i >= 0; i--){
		if (num >= power(10, i)){
			*n = i;
			break;
		}
	}
}

int getnum(long pos){
	int n;
	getlocn(pos, &n);
	double dm = ((double)pos - (double)loc10(n)) / (double)(n + 1);
	long m = (long)ceil(dm);
	long num = power(10, n) + m;
	char * num1 = (char *)malloc(19 * sizeof(char));
	sprintf(num1, "%ld", num-1);

	int x = (int)num1[pos - loc(num-1) - 1] - '0';
	free(num1);
	return x;
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 2

Verdict: ACCEPTED

Test 3

Group: 3

Verdict: RUNTIME ERROR