Submission #1359308

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Source Code Expand

#include<set>
#include<map>
#include<cmath>
#include<ctime>
#include<cstdio>
#include<cassert>
#include<cstdlib>
#include<cstring>
#include<algorithm>
using namespace std;
const double PI=acos(-1);
typedef long long ll;
typedef pair<int,int> pi;
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define rep(i,a,b) for (int i=(a);i<=(b);i++)
#define per(i,a,b) for (int i=(a);i>=(b);i--)
#define Rep(i,a,b) for (int i=(a);i<(b);i++)
#define Per(i,a,b) for (int i=(a);i>(b);i--)
//debug
#define deb printf("begin\n");
#define dee printf("end\n");
#define def printf("find\n");
#define dey printf("Yes\n");
#define den printf("No\n");
#define dew printf("wrong\n");
void read(int&x){
	x=0;int f=1;char ch=getchar();
	while ((ch<'0'||ch>'9')&&ch!='-')ch=getchar();
	if (ch=='-')f=-1,ch=getchar();
	while (ch>='0'&&ch<='9')x=x*10+ch-'0',ch=getchar();
	x*=f;
}
//--------------------------head--------------------------//

#define maxn 500005
char s[maxn];int n,nxt[maxn];
int main(){
	//freopen("Increasing Numbers.in","r",stdin);
	//freopen("Increasing Numbers.out","w",stdout);
	scanf("%s",s+1);n=strlen(s+1);int sum=0;
	nxt[n]=n+1;per(i,n-1,1)if (s[i]==s[i+1])nxt[i]=nxt[i+1];else nxt[i]=i+1;
	rep(i,1,n){
		int j=nxt[i];
		if (j==n){
			if ((((s[i]-'0'+10-sum%10)%10)==1)&&(((s[n]-'0'+10-sum%10)%10)==0)){sum+=10;break;}
		}
		if (j>n){sum+=((s[i]-'0'+10-sum%10)%10);/*printf("%d\n",s[i]-'0'+10-sum%10);*/break;}
		else if (s[i]<s[j])sum+=((s[i]-'0'+10-sum%10)%10);
		else sum+=((s[i]-'0'+9-sum%10)%10);
		//printf("%d\n",sum);
	}
	printf("%d\n",(sum+8)/9);return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:43:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",s+1);n=strlen(s+1);int sum=0;
                 ^

Judge Result