제출 #1083590

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1083590		vladilius	팀들 (IOI15_teams)	C++17	21 / 100	4093 ms	20148 KiB

teams

#include <bits/stdc++.h>
#include "teams.h"
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second
#define ins insert
 
int n;
vector<int> a, b;
vector<pii> all;
 
void init(int N, int A[], int B[]){
    n = N;
    a.resize(n + 1);
    for (int i = 1; i <= n; i++) a[i] = A[i - 1];
    b.resize(n + 1);
    for (int i = 1; i <= n; i++) b[i] = B[i - 1];
    
    all.pb({0, 0});
    for (int i = 1; i <= n; i++) all.pb({b[i], a[i]});
    sort(all.begin(), all.end());
}

int sum(int x, int x1, int y1, int x2){
    int out = 0;
    for (int i = 1; i <= x; i++){
        out += (x1 <= all[i].ss && all[i].ss <= x2 && all[i].ff >= y1);
    }
    return out;
}

int sum1(int x1, int y1, int x2, int y2){
    int out = 0;
    for (int i = 1; i <= n; i++){
        out += (x1 <= all[i].ss && all[i].ss <= x2 && y1 <= all[i].ff && all[i].ff <= y2);
    }
    return out;
}
 
vector<int> :: iterator it1, it2;
 
int can(int m, int K[]){
    vector<int> k(m + 1);
    for (int i = 1; i <= m; i++) k[i] = K[i - 1];
    sort(k.begin() + 1, k.end());
    
    vector<pii> st;
    vector<int> pr = {0};
    
    auto add = [&](int k, int x){
        while (!st.empty() && st.back().ss <= x){
            st.pop_back();
            pr.pop_back();
        }
        
        if (st.empty()) pr.pb(sum(x, 0, 0, k));
        else pr.pb(pr.back() + sum(x, st.back().ff + 1, 0, k));
        
        st.pb({k, x});
    };
    
    auto get = [&](int k, int x){
        if (all[x].ff < k) return 0;
        if (st.empty()) return sum(x, 0, k, k);
        int l = 0, r = (int) st.size() - 1;
        while (l + 1 < r){
            int m = (l + r) / 2;
            if (st[m].ss < x){
                r = m - 1;
            }
            else {
                l = m;
            }
        }
        if (st[r].ss >= x) l = r;
        if (st[l].ss < x) l = -1;
        
        int out = sum(x, 0, k, k);
        if (l != -1) out -= sum(x, 0, k, st[l].ff);
        if (l + 1 < pr.size()) out -= (pr.back() - pr[l + 1] - sum1((l != -1) ? (st[l].ff + 1) : 0, 0, st.back().ff, k - 1));
        return out;
    };

    for (int i = 1; i <= m; i++){
        while (!st.empty() && all[st.back().ss].ff < k[i]){
            st.pop_back();
            pr.pop_back();
        }

        if (get(k[i], n) < k[i]) return 0;
        
        int l = 1, r = n;
        while (l + 1 < r){
            int m = (l + r) / 2;
            if (get(k[i], m) < k[i]){
                l = m + 1;
            }
            else {
                r = m;
            }
        }
        if (get(k[i], l) == k[i]) r = l;
        
        add(k[i], r);
    }
    return 1;
}

컴파일 시 표준 에러 (stderr) 메시지

teams.cpp: In lambda function:
teams.cpp:53:24: warning: declaration of 'k' shadows a previous local [-Wshadow]
   53 |     auto add = [&](int k, int x){
      |                    ~~~~^
teams.cpp:46:17: note: shadowed declaration is here
   46 |     vector<int> k(m + 1);
      |                 ^
teams.cpp: In lambda function:
teams.cpp:65:24: warning: declaration of 'k' shadows a previous local [-Wshadow]
   65 |     auto get = [&](int k, int x){
      |                    ~~~~^
teams.cpp:46:17: note: shadowed declaration is here
   46 |     vector<int> k(m + 1);
      |                 ^
teams.cpp:70:17: warning: declaration of 'int m' shadows a parameter [-Wshadow]
   70 |             int m = (l + r) / 2;
      |                 ^
teams.cpp:45:13: note: shadowed declaration is here
   45 | int can(int m, int K[]){
      |         ~~~~^
teams.cpp:83:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |         if (l + 1 < pr.size()) out -= (pr.back() - pr[l + 1] - sum1((l != -1) ? (st[l].ff + 1) : 0, 0, st.back().ff, k - 1));
      |             ~~~~~~^~~~~~~~~~~
teams.cpp: In function 'int can(int, int*)':
teams.cpp:97:17: warning: declaration of 'int m' shadows a parameter [-Wshadow]
   97 |             int m = (l + r) / 2;
      |                 ^
teams.cpp:45:13: note: shadowed declaration is here
   45 | int can(int m, int K[]){
      |         ~~~~^

• Subtask 1: 21 / 21
• Subtask 2: 0 / 13
• Subtask 3: 0 / 43
• Subtask 4: 0 / 23