这真是五彩斑斓,又有AC又有WA还有TLE
求助大佬QAQ
#include<bits/stdc++.h>
using namespace std;
int stone[50001],ans=0,s,n,m,head=1,ans2=0,move1=0;
bool st[50001];
void check(int l,int r,int m){
ans=(l+r)/2;
move1=0;
for(int i=0;i<=n;i++){
st[i]=0;
}
for(int i=0;i<=n;i++){
head=i+1;
if(st[i]!=0)
continue;
while(st[head]!=0)
head++;
while(stone[head]-stone[i]<ans){//不合法就把不合法的石头移走直到合法
if(head==n+1){//为了防止丢掉终点的石头
st[i]=1;
move1++;
break;
}
else{//不丢掉终点石头的正常情况
st[head]=1;
move1++;
head++;
}
}
}
if(move1<m)check(ans,r,m);
if(move1>m)check(l,ans,m);
if(move1==m){
ans2=ans;
return;
}
}
int main(){
cin>>s>>n>>m;
for(int i=1;i<=n;i++){
cin>>stone[i];
}
if(n==0&&m==0){
cout<<s;
return 0;
}//怕有毒瘤点的特判
if(m==0){
int x=1000000000;
stone[n+1]=s;
for(int i=0;i<=n;i++){
if(stone[i+1]-stone[i]<x)
x=stone[i+1]-stone[i];
}
cout<<x;
return 0;
}//同上
stone[n+1]=s;
check(0,s,m);
cout<<ans2;
return 0;
}