oj.uz

답안 #958214

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
958214 2024-04-05T07:35:02 Z yeediot 돌 무게 재기 (IZhO11_stones) C++17
100 / 100
 35 ms 5736 KB 
#include<bits/stdc++.h>
using namespace std;
#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);
}
struct line{
    int a,b;
    int operator()(const int x)const{
        return a*x+b;
    }
};
bool check(line l1,line l2,line l3){
    return (l3.b-l2.b)*(l1.a-l2.a)<=(l2.b-l1.b)*(l2.a-l3.a);
}
const int mxn=1e5+5;
struct node{
    int mx,mn;
};
node operator +(node a,node b){
    return {max(a.mx,b.mx),min(a.mn,b.mn)};
}
int n;
struct segtree{
    node seg[4*mxn];
    int tag[4*mxn];
    void add(int id,int v){
        seg[id].mx+=v;
        seg[id].mn+=v;
        tag[id]+=v;
    }
    void push(int id){
        if(tag[id]==0)
            return;
        add(id*2,tag[id]);
        add(id*2+1,tag[id]);
        tag[id]=0;
    }
    void build(int l,int r,int id){
        seg[id].mx=seg[id].mn=tag[id]=0;
        if(l==r){
            return;
        }
        int mm=l+r>>1;
        build(l,mm,id*2);
        build(mm+1,r,id*2+1);
    }
    void modify(int l,int r,int id,int ql,int qr,int v){
        if(qr<l or r<ql){
            return;
        }
        if(ql<=l and r<=qr){
            add(id,v);
            return;
        }
        int mm=l+r>>1;
        push(id);
        modify(l,mm,id*2,ql,qr,v);
        modify(mm+1,r,id*2+1,ql,qr,v);
        seg[id]=seg[id*2]+seg[id*2+1];
    }
    void modify(int l,int r,int v){
        modify(1,n,1,l,r,v);
    }
}tr;
signed main(){
    setio();
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin>>n;
    tr.build(1,n,1);
    for(int i=1;i<=n;i++){
        int c,s;
        cin>>c>>s;
        s=(s==1?1:-1);
        tr.modify(1,c,s);
        if(tr.seg[1].mn>=0)
            cout<<">\n";
        else if(tr.seg[1].mx<=0)
            cout<<"<\n";
        else
            cout<<"?\n";
    }
}
 /*
 input:
 
 */

Compilation message

stones.cpp: In member function 'void segtree::build(int, int, int)':
stones.cpp:81:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   81 |         int mm=l+r>>1;
      |                ~^~
stones.cpp: In member function 'void segtree::modify(int, int, int, int, int, int)':
stones.cpp:93:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   93 |         int mm=l+r>>1;
      |                ~^~
stones.cpp: In function 'void setIO(std::string)':
stones.cpp:41:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stones.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 + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2512 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 5 ms 4700 KB Output is correct
11 Correct 20 ms 5208 KB Output is correct
12 Correct 31 ms 5460 KB Output is correct
13 Correct 29 ms 5668 KB Output is correct
14 Correct 35 ms 5468 KB Output is correct
15 Correct 29 ms 5464 KB Output is correct
16 Correct 29 ms 5468 KB Output is correct
17 Correct 28 ms 5468 KB Output is correct
18 Correct 30 ms 5468 KB Output is correct
19 Correct 29 ms 5676 KB Output is correct
20 Correct 28 ms 5468 KB Output is correct
21 Correct 31 ms 5456 KB Output is correct
22 Correct 30 ms 5468 KB Output is correct
23 Correct 35 ms 5736 KB Output is correct
24 Correct 29 ms 5620 KB Output is correct
25 Correct 31 ms 5456 KB Output is correct