Submission #203284

#	Time	Username	Problem	Language	Result	Execution time	Memory
203284		Rakhmand	Two Antennas (JOI19_antennas)	C++14	0 / 100	7 ms	376 KiB

antennas

//
//  ROIGold.cpp
//  Main calisma
//
//  Created by Rakhman on 05/02/2019.
//  Copyright © 2019 Rakhman. All rights reserved.
//

#include <cstring>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <queue>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <cassert>
#include <iterator>

#define ios ios_base::sync_with_stdio(0), cout.tie(0), cin.tie(0);
#define S second
#define F first
#define pb push_back
#define nl '\n'
#define NL cout << '\n';
#define EX exit(0)
#define all(s) s.begin(), s.end()
#define FOR(i, start, finish, k) for(int i = start; i <= finish; i += k)

const int MXN = 2e5 + 1;
const long long MNN = 1e6 + 200;
const long long MOD = 1e9 + 7;
const long long INF = 1e18;
const int OO = 1e9 + 500;

typedef long long llong;
typedef unsigned long long ullong;

using namespace std;

void istxt(bool yes){
    if(yes == 1){
        freopen("balancing.in", "r", stdin);
        //freopen("/Users/rakhmanabdirashov/Desktop/folder/Programming/Road2Master/Road2Master/e.txt", "w", stdout);
    }else{
        freopen("/Users/rakhmanabdirashov/Desktop/folder/Programming/Road2Master/Road2Master/input.txt", "r", stdin);
    }
}

int n;

struct antenna{
    int h, a, b;
}b[MXN];

int main () {
    ios;
    istxt(0);
    cin >> n;
    for(int i = 1; i <= n; i++){
        cin >> b[i].h >> b[i].a >> b[i].b;
    }
    int q;
    cin >> q;
    while(q--){
        int l, r;
        cin >> l >> r;
        int ans = -1;
        for(int i = l; i <= r; i++){
            for(int j = i + b[i].a; j <= min(r, i + b[i].b); j++){
                if(j - b[j].b <= i && i <= j - b[j].a){
                    ans = max(ans, abs(b[i].h - b[j].h));
                }
            }
        }
        cout << ans << nl;
    }
    return 0;
}

Compilation message (stderr)

antennas.cpp: In function 'void istxt(bool)':
antennas.cpp:55:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen("balancing.in", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
antennas.cpp:58:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen("/Users/rakhmanabdirashov/Desktop/folder/Programming/Road2Master/Road2Master/input.txt", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 2
• Subtask 2: 0 / 11
• Subtask 3: 0 / 22
• Subtask 4: 0 / 65