Submission #4032129

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Source Code Expand

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
void merge_sort(int* data,int _sz){
    if(_sz>1){
        int leftsz=_sz/2,rightsz=_sz-leftsz;
        int left[leftsz];
        int right[rightsz];
        int i,j=0,k;
        for(i=0;i<_sz;i++){
            if(i<leftsz){
                left[i]=data[i];
            }
            else{
                right[j]=data[i];
                j++;
            }
        }
        merge_sort(left,leftsz);
        merge_sort(right,rightsz);
        j=0;
        k=0;
        for(i=0;i<_sz;i++){
            if(j==leftsz){
                while(i<_sz){
                    data[i]=right[k];
                    k++;
                    i++;
                }
                return;
            }
            else if(k==rightsz){
                while(i<_sz){
                    data[i]=left[j];
                    j++;
                    i++;
                }
            }
            else if(left[j]<right[k]){
                data[i]=left[j];
                j++;
            }
            else{
                data[i]=right[k];
                k++;
            }
        }
        return;
    }
    return;
}
int main(){
    int n,tmp,i,j;
    int64_t rec[2]={0,0};
    int data[100000];
    scanf("%d",&n);
    for(i=0;i<n;i++){
        scanf("%d",data+i);
    }
    merge_sort(data,n);
    j=0;
    for(i=n-1;i>0;i--){
        if(data[i]==data[i-1]){
            rec[j]=(int64_t)data[i];
            i--;
            j++;
        }
        if(j==2)break;
    }
    if(j!=2){
        printf("0");
        return 0;
    }
    printf("%I64d",rec[0]*rec[1]);
    return 0;

}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:74:12: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘int64_t {aka long int}’ [-Wformat=]
     printf("%I64d",rec[0]*rec[1]);
            ^
./Main.c:56:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ^
./Main.c:58:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",data+i);
         ^

Judge Result