Submission #936032

#	Time	Username	Problem	Language	Result	Execution time	Memory
936032		yeediot	Snowball (JOI21_ho_t2)	C++14	100 / 100	70 ms	16276 KiB

Main

#include<bits/stdc++.h>
 using namespace std;
 #define int long long
 #define F first
 #define S second
 #define all(x) x.begin(),x.end()
 #define pii pair<int,int>
 #define pb push_back
 #define sz(x) (int)(x.size())
 #define chmin(x,y) x=min(x,y)
 #define chmax(x,y) x=max(x,y)
 #define vi vector<int>
 #define vp vector<pii>
 #define vvi vector<vi>
 #define ykh mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count())
 #define __lg(x) 63-__builtin_clzll(x)
 #define pow2(x) (1LL<<x)
 void __print(int x) {cerr << x;}
 void __print(float x) {cerr << x;}
 void __print(double x) {cerr << x;}
 void __print(long double x) {cerr << x;}
 void __print(char x) {cerr << '\'' << x << '\'';}
 void __print(const char *x) {cerr << '\"' << x << '\"';}
 void __print(const string &x) {cerr << '\"' << x << '\"';}
 void __print(bool x) {cerr << (x ? "true" : "false");}
 
 template<typename T, typename V>
 void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
 template<typename T>
 void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
 void _print() {cerr << "]\n";}
 template <typename T, typename... V>
 void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
 #ifdef local
 void setio(){freopen("/Users/iantsai/Library/Mobile Documents/com~apple~CloudDocs/cpp/Empty.md","r",stdin);}
 #define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
 #else
 void setio(){}
 #define debug(x...)
 #endif
void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}
signed main(){
    setio();
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int n,Q;
    cin>>n>>Q;
    vector<int>x(n+1),q(Q+1);
    vector<pii>temp;
    for(int i=1;i<=n;i++){
        cin>>x[i];
    }
    for(int i=1;i<=Q;i++){
        cin>>q[i];
    }
    for(int i=0;i<=n;i++){
        if(i==n){
            temp.pb({1e18,i});
        }
        else if(i==0){
            temp.pb({1e18,i});
        }
        else{
            temp.pb({x[i+1]-x[i],i});
        }
    }
    sort(all(temp));
    debug(temp);
    int cur=0,mx=0,mn=0;
    int prev=0;
    int l=0;
    vector<int>ans(n+2);
    for(int i=1;i<=Q;i++){
        cur+=q[i];
        if(-cur>mn){
            mn=-cur;
        }
        if(cur>mx){
            mx=cur;
        }
        while(l<n and temp[l].F<=mx+mn){
            if(q[i]<0){
                ans[temp[l].S]+=mx;
                ans[temp[l].S+1]+=temp[l].F-mx;
            }
            else{
                ans[temp[l].S+1]+=mn;
                ans[temp[l].S]+=temp[l].F-mn;
            }
            l++;
        }
    }
    debug(mx,mn,l);
    while(l<sz(temp)){
        //debug(temp[l]);
        ans[temp[l].S]+=mx;
        ans[temp[l].S+1]+=mn;
        debug(ans);
        l++;
    }
    for(int i=1;i<=n;i++){
        cout<<ans[i]<<'\n';
    }
}
  /*
  input:
   l r
   x
   r=min(r,x-l)
  */
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:73:9: warning: unused variable 'prev' [-Wunused-variable]
   73 |     int prev=0;
      |         ^~~~
Main.cpp: In function 'void setIO(std::string)':
Main.cpp:42:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:43:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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