Submission #1111140

#	Time	Username	Problem	Language	Result	Execution time	Memory
1111140		kh0i	Restore Array (RMI19_restore)	C++17	100 / 100	172 ms	1096 KiB

restore

#include "bits/stdc++.h"
using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...)
#endif

using ll = long long;
using pii = pair<int, int>;

#define F first
#define S second
#define sz(x) (int)((x).size())
#define all(x) (x).begin(), (x).end()

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll get_rand(ll l, ll r) {
    assert(l <= r);
    return uniform_int_distribution<ll> (l, r)(rng);
}

const int N = 5003;

int n, m, d[N];
vector<pii> g[N];

void solve(){
    cin >> n >> m;
    for(int i = 1; i <= n; ++i){
        g[i].emplace_back(i - 1, 0);
        g[i - 1].emplace_back(i, -1);
    }
    for(int i = 1; i <= m; ++i){
        int l, r, k, v;
        cin >> l >> r >> k >> v;
        int len = r - l + 1;
        ++l, ++r;
        if(v)
            g[r].emplace_back(l - 1, len - k + 1);
        else
            g[l - 1].emplace_back(r, k - len);
    }

    memset(d, -0x3f, sizeof(d));
    d[0] = 0;
    for(int iter = 0; iter <= n; ++iter){
        for(int i = n; i >= 0; --i){
            for(auto [v, x] : g[i])
                d[i] = max(d[i], d[v] + x);
        }
    }

    for(int i = 0; i <= n; ++i){
        for(auto [v, x] : g[i]){
            if(d[i] < d[v] + x){
                debug(i, v, x);
                cout << -1;
                return;
            }
        }
    }

    for(int i = 1; i <= n; ++i)
        cout << d[i] - d[i - 1] << " \n"[i == n];
}

int32_t main() {
    cin.tie(nullptr)->sync_with_stdio(0);
    #define task "restore"
    if(fopen(task".in", "r")){
        freopen(task".in", "r", stdin);
        freopen(task".out", "w", stdout);
    }
    int test = 1;
//    cin >> test;
    for(int i = 1; i <= test; ++i){
//        cout << "Case #" << i << ": ";
        solve();
    }
    #ifdef LOCAL
        cerr << "\n[Time]: " << 1000.0 * clock() / CLOCKS_PER_SEC << " ms.\n";
    #endif
    return 0;
}

Compilation message (stderr)

restore.cpp: In function 'int32_t main()':
restore.cpp:73:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |         freopen(task".in", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
restore.cpp:74:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 13 / 13
• Subtask 3: 25 / 25
• Subtask 4: 55 / 55