Guessing game

#include <stdio.h>
#include <string.h>
#include<time.h>
#include<stdlib.h>
int main()
{
    int a[8]={2};
    for(int i=0;i<8;i++) a[i]=2;
    srand(time(NULL));
    int x = rand()%8 + 1;
    a[x-1] = 1;
    int i=0, j=0, k=0;
    int y1, y2, s1, s2;
    while(i<2) {
        s1=s2=0;
        printf("\nTry %d :\n", i+1);
        printf("How many items in left side? : ");
        scanf("%d", &y1);
        for(int i=0;i<y1;i++) {
            scanf("%d", &y2);
            s1+=a[y2-1];
        }
        printf("How many items in right side? : ");
        scanf("%d", &y1);
        for(int i=0;i<y1;i++) {
            scanf("%d", &y2);
            s2+=a[y2-1];
        }
        if(s1==s2) {
            printf("They are equal!");
        }
        else{
            printf("The weights are: %d and %d. They are not equal.", s1, s2);
        }
        i++;
    }
    printf("\nEnter your guess: ");
    scanf("%d", &k);
    if(k==x) printf("\nYou are absolutely right!");
    else printf("\nBetter luck next time! :V");
}