Submission #305692

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Source Code Expand

#include <stdio.h>

int power10(int x) {
    int ans = 1;
    int i;
    for(i=0; i<x; i++) {
        ans *= 10;
    }
    return ans;
}

int num[10];
int dir[10];

void rotate(int x, int N)
{
    if(x>=N) {
        int i;
        for(i=0; i<N; i++) {
            printf("%d", num[i]);
        }
        puts("");
        return;
    }
    for(; num[x]+dir[x]>=-1 && num[x]+dir[x]<11; num[x]+=dir[x]) {
        rotate(x+1, N);
    }
    num[x]-=dir[x];
    dir[x] = -dir[x];
}

int main()
{
    int N;
    int i;
    scanf("%d", &N);
    printf("%d\n", power10(N)-1);
    for(i=0; i<N; i++) {
        dir[i] = 1;
        num[i] = 0;
    }
    rotate(0, N);
    return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:36:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]

Judge Result