# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1243878 | somefolk | Distributing Candies (IOI21_candies) | C++20 | 0 ms | 0 KiB |
#include <iostream>
#include <cmath>
#include <algorithm>
#include <string>
#include <vector>
#include <map>
#include <unordered_map>
#include <queue>
#include <set>
#include <unordered_set>
#include <complex>
#include <list>
#include <cassert>
#include <chrono>
#include <random>
#include <stack>
#include <iomanip>
#include <fstream>
using namespace std;
#define endl "\n"
// #define int long long
const int INF = 1e9+7;
const int MOD = 1e9+7;
struct Query {
int idx, val;
};
vector<int> distribute_candies(vector<int> a, vector<int> l, vector<int> r, vector<int> v){
int n = (int)a.size(), q = (int)l.size();
int option = 1, option2 = 1;
for(int i = 0; i < q; i++){
if(v[i] < 0){
option = 0;
}
if(i && v[i] != v[i-1]){
option2 = 0;
}
}
vector<long long> sol(n, 0);
if(!option2){
vector<Query> qry;
for(int i = 0; i < q; i++){
qry.push_back({l[i], v[i]});
qry.push_back({r[i], -v[i]});
}
sort(qry.begin(), qry.end(), [&](auto left, auto right){
return left.idx < right.idx;
});
int curr = 0, j = 0;
for(int i = 0; i < n; i++){
while(i == qry[j].idx){
curr += v[i];
if(curr > a[i]) curr = a[i];
if(curr < 0) curr = 0;
j++;
}
sol[i] = curr;
}
} else if(!option){
for(int i = 0; i < q; i++){
sol[l[i]] += v[i];
if(r[i] < n-1){
sol[r[i]+1] -= v[i];
}
}
for(int i = 1; i < n; i++){
sol[i] += sol[i-1];
}
} else {
for(int i = 0; i < q; i++){
for(int j = l[i]; j <= r[i]; j++){
if(sol[j] >= -v[i] && sol[j] <= a[j]-v[i]){
sol[j] += v[i];
} else {
sol[j] = (v[i]>0 ? a[j] : 0);
}
}
}
}
vector<int> sol2(n, 0);
for(int i = 0; i < n; i++){
if(sol[i] > a[i]){
sol2[i] = a[i];
} else {
sol2[i] = sol[i];
}
}
for(auto &i : sol2){
cout << i << " ";
}
return sol2;
}
int32_t main(){
int n, q;
cin >> n >> q;
vector<int> a(n), l(q), r(q), v(q);
for(int i = 0; i < n; i++) cin >> a[i];
for(int i = 0; i < q; i++) cin >> l[i];
for(int i = 0; i < q; i++) cin >> r[i];
for(int i = 0; i < q; i++) cin >> v[i];
distribute_candies(a, l, r, v);
return 0;
}