This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "overtaking.h"
#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
struct bus{
ll t;
ll exp_nt;
ll real_nt;
ll v;
};
vector<vector<bus>> buses;
ll M_glob;
vector<int> s;
ll x;
void sort_bus(int i){
sort(buses[i].begin(), buses[i].end(), [](bus& a, bus& b){
return a.t < b.t;
});
}
void calc_real_nts(int i){
sort_bus(i);
ll last_max = -1;
ll current_max = -1;
for (int j = 0; j<buses[i].size(); j++){
if (j != 0 && buses[i][j].t != buses[i][j-1].t){
last_max = current_max;
}
current_max = max(buses[i][j].exp_nt, current_max);
buses[i][j].real_nt = max(last_max, buses[i][j].exp_nt);
}
}
void init(int L, int N, std::vector<long long> T, std::vector<int> W, int X, int M, std::vector<int> S)
{
buses = vector<vector<bus>>(M-1, vector<bus>(N));
M_glob = M;
s = S;
x = X;
for (int i = 0; i<N; i++){
buses[0][i].t = T[i];
buses[0][i].v = W[i];
buses[0][i].exp_nt = T[i]+((ll)S[1])*W[i];
}
for (int i = 0; i<M-1; i++){
calc_real_nts(i);
if (i != M-2){
for (int j = 0; j<N; j++){
buses[i+1][j] = {buses[i][j].real_nt, buses[i][j].real_nt+(S[i+2]-S[i+1])*buses[i][j].v, -1, buses[i][j].v};
}
}
}
return;
}
int bin_s(ll t, int m){
int l = 0;
int r = buses[m].size()-1;
while (l<r){
int mid = (l+r+1)/2;
if (buses[m][mid].t >= t){
r = mid-1;
} else {
l = mid;
}
}
if (buses[m][l].t >= t){
return -1;
} else {
return l;
}
}
long long arrival_time(long long Y)
{
ll cur_t = Y;
for (int i = 0; i<M_glob-1;i++){
int j = bin_s(cur_t, i);
ll my_exp_nt = cur_t+(s[i+1]-s[i])*x;
if (j >= 0) cur_t = max(my_exp_nt, buses[i][j].real_nt);
else cur_t = my_exp_nt;
}
return cur_t;
}
Compilation message (stderr)
overtaking.cpp: In function 'void calc_real_nts(int)':
overtaking.cpp:29:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bus>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
29 | for (int j = 0; j<buses[i].size(); j++){
| ~^~~~~~~~~~~~~~~~
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