Submission #501445

#	Time	Username	Problem	Language	Result	Execution time	Memory
501445		nighty	Sjeckanje (COCI21_sjeckanje)	C++14	0 / 110	1 ms	204 KiB

Main

#include <bits/stdc++.h>

using namespace std;

bool areSameSgn(long long a, long long b) {
    return (a > 0 && b > 0) || (a < 0 && b < 0) || (a == b);
}

long long calc(const vector<long long>& a) {
    long long res = 0;
    int i = 0;
    while (i + 1 < a.size()) {
        int from = i;
        if (a[from] == a[from + 1]) {
            ++i;
            continue;
        }
        while (i + 1 < a.size() && areSameSgn(a[i + 1] - a[i], a[from + 1] - a[from])) {
            ++i;
        }
        res += abs(a[i] - a[from]);
        ++i;
    }
    return res;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, q;
    cin >> n >> q;
    vector<long long> a(n);
    for (auto& i : a) {
        cin >> i;
    }
    while (q--) {
        int l, r, x;
        cin >> l >> r >> x;
        --l, --r;
        for (int i = l; i <= r; ++i) {
            a[i] += x;
        }
        cout << calc(a) << '\n';
    }
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'long long int calc(const std::vector<long long int>&)':
Main.cpp:12:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     while (i + 1 < a.size()) {
      |            ~~~~~~^~~~~~~~~~
Main.cpp:18:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |         while (i + 1 < a.size() && areSameSgn(a[i + 1] - a[i], a[from + 1] - a[from])) {
      |                ~~~~~~^~~~~~~~~~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 40
• Subtask 3: 0 / 55