OJ-Problems-Source/HDOJ/5247_autoAC.cpp

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#include<cstdio>
#include<set>
#include<algorithm>
using namespace std;
typedef long long LL;
const int maxn = 10005;
set<LL>s;
set<LL>::iterator it1,it2;
int n,m;
int num[maxn] = {0};
LL arr[maxn];
int main(){
scanf("%d%d",&n,&m);
for(int i = 0; i < n; i++)
scanf("%I64d",&arr[i]);
for(int i = 0; i < n; i++){
s.clear();
s.insert(arr[i]);
num[1] ++;
for(int j = i + 1; j < n; j++){
if(!s.count(arr[j]))
s.insert(arr[j]);
else
break;
it1 = s.begin();
it2 = s.end();
it2 --;
LL e1 = *it1,e2 = *it2;
if(e2 - e1 == s.size() - 1){
num[s.size()] ++;
}
}
}
printf("Case #1:\n");
while(m--){
int k;
scanf("%d",&k);
printf("%d\n",num[k]);
}
return 0;
}