Submission #2870867

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Source Code Expand

#include<stdio.h>
int main(void){
    unsigned long a,c;
    scanf("%ld",&a);
    unsigned long b[a+1];
    b[1]=0;
    b[2]=0;
    b[3]=1;
    if(a < 3)printf("0\n");
    else if(a == 3)printf("1\n");
    else{
        for(int i=4;i<a+1;i++)b[i]=(b[i-1]+b[i-2]+b[i-3])%10007;
        printf("%ld\n",b[a]);
    }
    return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:4:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%ld",&a);
     ^

Judge Result