Submission #421740

#	Time	Username	Problem	Language	Result	Execution time	Memory
421740		Kerim	Snowball (JOI21_ho_t2)	C++17	33 / 100	185 ms	9924 KiB

Main

#include "bits/stdc++.h"
#define MAXN 200009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;
 
typedef long long ll;
typedef pair<ll,ll> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
ll arr[MAXN],w[MAXN],par[MAXN],mx[MAXN],mn[MAXN];
PII rng[3];
const ll I=1e16;
bool intersect(PII a, PII b){
	if(a.ff>b.ff)swap(a,b);
	return (b.ff<=a.ss and a.ss<=b.ss);
}
PII get(int pos,int ind){
	return {arr[pos]+mn[ind],arr[pos]+mx[ind]};
}
int main(){
    //freopen("file.in", "r", stdin);
    int n,q;
    scanf("%d%d",&n,&q);
    for(int i=1;i<=n;i++)
		scanf("%lld",arr+i);
	arr[0]=-I; 
	arr[n+1]=I;
	for(int i=1;i<=q;i++){
		scanf("%lld",w+i);
		par[i]=par[i-1]+w[i];
		mn[i]=min(mn[i-1],par[i]);
		mx[i]=max(mx[i-1],par[i]);
	}
	for(int i=1;i<=n;i++){
		ll A=get(i,q).ff,B=get(i,q).ss;
		if(intersect(get(i-1,q), get(i,q))){
			int st=1,en=q;
			while(st+1<en){
				int mid=(st+en)>>1;
				if(intersect(get(i-1,mid), get(i,mid)))en=mid;
				else st=mid;
			}
			if(intersect(get(i-1,st), get(i,st)))en=st;
			if(w[en]<0)A=get(i-1,en).ss;
			else A=get(i,en).ff;
		}
		if(intersect(get(i+1,q),get(i,q))){
			int st=1,en=q;
			while(st+1<en){
				int mid=(st+en)>>1;
				if(intersect(get(i+1,mid),get(i,mid)))en=mid;
				else st=mid;
			}
			if(intersect(get(i+1,st),get(i,st)))en=st;
			if(w[en]<0)B=get(i,en).ss;
			else B=get(i+1,en).ff;
		}
		printf("%lld\n",B-A);
	}
	return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:33:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     scanf("%d%d",&n,&q);
      |     ~~~~~^~~~~~~~~~~~~~
Main.cpp:35:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |   scanf("%lld",arr+i);
      |   ~~~~~^~~~~~~~~~~~~~
Main.cpp:39:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |   scanf("%lld",w+i);
      |   ~~~~~^~~~~~~~~~~~

• Subtask 1: 33 / 33
• Subtask 2: 0 / 67