Submission #1066603

#	Time	Username	Problem	Language	Result	Execution time	Memory
1066603		guanex	Robots (IOI13_robots)	C++14	100 / 100	1377 ms	30732 KiB

robots

#include "robots.h"

#include<bits/stdc++.h>

using namespace std;

typedef pair<int, int> ii;
typedef long long ll;
typedef pair<long long, long long> pll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<string> vs;
#define pb push_back
#define fi first
#define se second
#define whole(v) v.begin(), v.end()
#define rwhole(v) v.rbegin(), v.rend()
#define inf INT_MAX/2
#define fro front

int A, B, T;
int x[1000010];
int y[1000010];
int w[1000010];
int s[1000010];
vector<ii> z;

bool f(int n){
    int j = 0;
    int i = 0;
    vector<int> ne;
    priority_queue<int, vector<int>, greater<int>> q;
    for(j; j <= A; ++j){
        while(i < z.size() && z[i].fi >= x[j]){
            q.push(z[i].se);
            ++i;
        }
        while(q.size() > j * n){
            ne.pb(q.top());
            q.pop();
        }
    }
    sort(whole(ne));
    i = 0;
    j = 0;
    int cnt = ne.size();
    if(ne.size() <= 0){
        return 1;
    }
    for(j; j < B; ++j){
        int cn = 0;
        while(ne[i] < y[j]){
            if(cn == n){
                break;
            }
            cn++;
            cnt--;
            ++i;
            if(i >= ne.size()){
                break;
            }
        }
        if(i >= ne.size()){
            break;
        }
    }
    if(cnt > 0){
        return 0;
    }else{
        return 1;
    }
}

int putaway(int a, int b, int t, int X[], int Y[], int W[], int S[]){
    //memset(x, 0, sizeof x);
    for(int i = 0; i < a; ++i){
        x[i] = X[i];
    }
    for(int i = 0; i < b; ++i){
        y[i] = Y[i];
    }
    for(int i = 0; i < t; ++i){
        w[i] = W[i];
    }
    for(int i = 0; i < t; ++i){
        s[i] = S[i];
    }
    sort(x, x+a);
    sort(y, y+b);
    reverse(x, x+a);
    A = a;
    B = b;
    T = t;
    for(int i = 0; i < t; ++i){
        z.pb(ii(w[i], s[i]));
    }
    sort(rwhole(z));
    int lo = 0;
    int hi = t + 2;
    while(hi - lo > 1){
        int mi = lo + (hi - lo) / 2;
        if(f(mi)){
            hi = mi;
        }else{
            lo = mi;
        }
    }
    if(hi > t){
        return -1;
    }
    return hi;
}


/*int main(){
    int a = 3;
    int b = 2;
    int t = 10;
    int X[] = {6, 2, 9};
    int Y[] = {4, 7};
    int W[] = {4, 8, 2, 7, 1, 5, 3, 8, 7, 10};
    int S[] = {6, 5, 3, 9, 8, 1, 3, 7, 6, 5};
    cout << putaway(a, b, t, X, Y, W, S) << endl;
}*/

Compilation message (stderr)

robots.cpp: In function 'bool f(int)':
robots.cpp:33:9: warning: statement has no effect [-Wunused-value]
   33 |     for(j; j <= A; ++j){
      |         ^
robots.cpp:34:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         while(i < z.size() && z[i].fi >= x[j]){
      |               ~~^~~~~~~~~~
robots.cpp:38:24: warning: comparison of integer expressions of different signedness: 'std::priority_queue<int, std::vector<int>, std::greater<int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   38 |         while(q.size() > j * n){
      |               ~~~~~~~~~^~~~~~~
robots.cpp:50:9: warning: statement has no effect [-Wunused-value]
   50 |     for(j; j < B; ++j){
      |         ^
robots.cpp:59:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |             if(i >= ne.size()){
      |                ~~^~~~~~~~~~~~
robots.cpp:63:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |         if(i >= ne.size()){
      |            ~~^~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 25 / 25
• Subtask 4: 37 / 37
• Subtask 5: 10 / 10