#include "meetings.h" #include <bits/stdc++.h> using namespace std; typedef long long ll; const int N = 5005; ll meet[N][N]; ll pref(int dim, int l, int r){ ll ans = meet[dim][r]; if(l != 0) ans -= meet[dim][l - 1]; return ans; } vector<ll> minimum_costs(vector<int> H, vector<int> L, vector<int> R) { int n = H.size(); int mx; for(int i = 0 ;i < n; i ++ ){ meet[i][i] = H[i]; mx = H[i]; for(int j = i - 1; j >= 0; j -- ){ mx = max(mx, H[j]); meet[i][j] = mx; } mx = H[i]; for(int j = i + 1; j < n; j ++ ){ mx = max(mx, H[j]); meet[i][j] = mx; } } for(int i = 0 ; i < n; i ++ ){ for(int j = 1; j < n; j ++ ){ meet[i][j] += meet[i][j - 1]; } } vector<ll> ans; int lf, rf; ll tot; for(int i = 0; i < L.size(); i ++ ){ lf = L[i]; rf = R[i]; tot = (ll)1e18; for(int j = lf; j <= rf; j ++ ){ tot = min(tot, pref(j, lf, rf)); } ans.push_back(tot); } return ans; }

meetings.cpp: In function 'std::vector<long long int> minimum_costs(std::vector<int>, std::vector<int>, std::vector<int>)':
meetings.cpp:41:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < L.size(); i ++ ){
                 ~~^~~~~~~~~~