Submission #418210

#	Time	Username	Problem	Language	Result	Execution time	Memory
418210		jacquesamsel	Meetings (IOI18_meetings)	C++14	4 / 100	5582 ms	1740 KiB

meetings

#include <bits/stdc++.h>
#include "meetings.h"
#define vecint vector<int>
using namespace std;

long long cost_at(vecint& H, int L, int R, int x) {
    int rmax = 0;
    long long acc = 0;
    for (int i = x; i <= R; i++) {
        rmax = max(rmax, H[i]);
        acc += rmax;
    }
    int lmax = 0;
    for (int i = x; i >= L; i--) {
        lmax = max(lmax, H[i]);
        acc += lmax;
    }
    acc -= H[x];
    return acc;
}

long long minimum_cost(vecint& H, int L, int R) {
    long long minx_val = INT64_MAX;
    int minx = -1;
    for (int i = L; i <= R; i++) {
        if (minx_val >= cost_at(H, L, R, i)) {
            minx = i;
        }
        minx_val = min(minx_val, cost_at(H, L, R, i));
    }
    // cout << minx << endl;
    return minx_val;
}

vector<long long> minimum_costs(vecint H, vecint L, vecint R) {
    vector<long long> mins;
    mins.reserve(L.size());
    for (int i = 0; i < L.size(); i++) {
        mins.push_back(minimum_cost(H, L[i], R[i]));
    }
    return mins;
}

Compilation message (stderr)

meetings.cpp: In function 'long long int minimum_cost(std::vector<int>&, int, int)':
meetings.cpp:24:9: warning: variable 'minx' set but not used [-Wunused-but-set-variable]
   24 |     int minx = -1;
      |         ^~~~
meetings.cpp: In function 'std::vector<long long int> minimum_costs(std::vector<int>, std::vector<int>, std::vector<int>)':
meetings.cpp:38:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |     for (int i = 0; i < L.size(); i++) {
      |                     ~~^~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 0 / 15
• Subtask 3: 0 / 17
• Subtask 4: 0 / 24
• Subtask 5: 0 / 40