Cod sursa(job #2422729)

Utilizator FunnyStockyMihnea Andreescu FunnyStocky Data 19 mai 2019 19:52:08
Problema Reconst Scor 0
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.88 kb
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <cmath>
#include <vector>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <queue>
#include <ctime>
#include <cassert>
#include <complex>
#include <string>
#include <cstring>
#include <chrono>
#include <random>
#include <queue>
#include <bitset>

using namespace std;

#ifdef LOCAL
#define eprintf(...) fprintf(stderr, __VA_ARGS__)
#else
#define eprintf(...) 42
#endif

typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, int> pli;
typedef pair <ll, ll> pll;
typedef long double ld;
#define mp make_pair
#define pb push_back
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int N = 2000 + 7;

struct data {
        int who, add;
};

int n, q, prefix[N];
vector <data> c[N];

void calculate(int a) {
        if (prefix[a] != -1)
                return;
        prefix[a] = 0;
        for (auto &it : c[a]) {
                int b = it.who, add = it.add;
                calculate(b);
                prefix[a] = prefix[b] + add;
        }
}

int main()
{
        freopen("reconst.in", "r", stdin);
        freopen("reconst.out", "w", stdout);

        cin >> n >> q;
        for (int i = 1; i <= n; i++)
                prefix[i] = -1;
        prefix[0] = 0;

        for (int i = 1; i <= q; i++) {
                int l, r, x;
                cin >> l >> r >> x;
                l--;
                c[l].push_back({r, -x});
                c[r].push_back({l, +x});
        }

        for (int i = 1; i <= n; i++)
                calculate(i);

        for (int i = 1; i <= n; i++) {
                int foo = prefix[i] - prefix[i - 1];
                if (foo < 0) foo = 0;
                cout << foo << " ";
        }
        cout << "\n";

        return 0;
}