Submission #895691

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Source Code Expand

#include<stdio.h>
#include<algorithm>
#include<set>
using namespace std;
int p[110000];
int sh[110000];
pair<int,int> lat[110000];
int goal[110000];
int num[110000];
int rev[110000];
int main(){
	int a,b;scanf("%d%d",&a,&b);
	int c;scanf("%d",&c);
	for(int i=0;i<c;i++){
		scanf("%d",p+i);
		p[i]--;
	}
	for(int i=0;i<b;i++)sh[i]=-1;
	
	for(int i=c-1;i>=0;i--){
		if(sh[p[i]]==-1){
			sh[p[i]]=i;
		}
	}
	for(int i=0;i<b;i++)lat[i]=make_pair(-sh[i],i);
	std::sort(lat,lat+b);
	for(int i=0;i<b;i++)goal[i]=lat[i].second;
	for(int i=0;i<b;i++)rev[goal[i]]=i;
	bool ok=true;
//	for(int i=0;i<b;i++)printf("%d\n",p[i]);
	for(int i=c-1;i>=0;i--){
		if(rev[p[i]]==0||num[rev[p[i]]]<num[rev[p[i]]-1]){
			num[rev[p[i]]]++;
		}
	}
	int fp=99999999;
	for(int i=0;i<b;i++){
		if(num[i]<a){
			fp=i;break;
		}
	}
	for(int i=fp;i<b-1;i++){
		if(goal[i]>goal[i+1])ok=false;
	}
	if(ok)printf("Yes\n");
	else printf("No\n");
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:12:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  int a,b;scanf("%d%d",&a,&b);
                             ^
./Main.cpp:13:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  int c;scanf("%d",&c);
                      ^
./Main.cpp:15:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",p+i);
                  ^

Judge Result