Submission #3596249

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Source Code Expand

#include<bits/stdc++.h>
#define st first
#define nd second
#define pb push_back
#define ppb pop_back
#define umax(x,y) x=max(x,y)
#define umin(x,y) x=min(x,y)
#define ll long long
#define ii pair<int,int>
#define iii pair<int,ii>
#define iiii pair<ii,ii>
#define sz(x) ((int) x.size())
#define orta ((bas+son)>>1)
#define all(x) x.begin(),x.end()
#define dbgs(x) cerr<<(#x)<<" --> "<<(x)<<" "
#define dbg(x) cerr<<(#x)<<" --> "<<(x)<<endl;getchar()
#define pw(x) (1ll<<(x))
#define inf 2005000
#define MOD 1000000007
#define N 200005
#define M 1000005
#define LOG 60
#define KOK 4000000
using namespace std;

int n;
ll ans,mul[20];
ll cur;
vector<int> d;

void eval(int to,bool flag) {

	ll add=1;

	for(int i=1;i<=to;i++) {

		int tot=0;

		for(int j=(i==1);j<=9;j++) {

			if(j-d[i-1]>=0 && j-d[i-1]<=9 && (!flag || i!=to || d[i-1]==0)) tot++;

		}

		add*=tot;

	}

	ans+=add;

}

void solve(int now,int to,bool flag) {

	if(now>to) {

		if(cur==-n) eval(to,flag);

		return ;

	}

	for(int i=-9;i<=9;i++) {

		d.pb(i);

		cur+=1ll*i*mul[now];

		solve(now+1,to,flag);

		cur-=1ll*i*mul[now];

		d.ppb();

	}

}

int main() {

	//freopen("input.txt","r",stdin);	

	scanf("%d",&n);

	ll mx=1;

	for(int i=1;i<=12;i++) {

		ll tut=mx;
		ll tut2=1;

		for(int j=1;j<=(i+1)/2;j++) {

			mul[j]=tut-tut2;

			tut/=10;
			tut2*=10;		

		}

		solve(1,(i+1)/2,i&1);

		mx*=10;

	}

	printf("%lld",ans);

}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:83:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^

Judge Result