Submission #1087287

#	Time	Username	Problem	Language	Result	Execution time	Memory
1087287		vyshniak_n	Ili (COI17_ili)	C++17	7 / 100	1 ms	1372 KiB

ili

//#pragma optimize("Ofast")
//#pragma optimize("unroll-loops")
//#pragma traget("avx,avx2,tune=native")
 
#include <iostream>
#include <cmath>
#include <algorithm>
#include <stdio.h>
#include <cstdint>
#include <cstring>
#include <string>
#include <cstdlib>
#include <vector>
#include <bitset>
#include <map>
#include <queue>
#include <ctime>
#include <stack>
#include <set>
#include <list>
#include <random>
#include <deque>
#include <functional>
#include <iomanip>
#include <sstream>
#include <fstream>
#include <complex>
#include <numeric>
#include <cassert>
#include <array>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <thread>
 
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
 
#define el '\n'
#define ff first
#define ss second
#define pb push_back
#define pf push_front
#define popb pop_back
#define popf pop_front
#define point pair <ll, ll>
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
 
using namespace std;
 
#include <random>
mt19937 rnd(time(0));
 
const ll INF = 2e18 + 10;
const ll inf = 2e9 + 10;
const ll N = 4e4 + 10;
const ll mod = 1e9 + 7;
const ll LOG = 10;

vector <ll> gr[N];
string s;

void solve() {
    ll n, m;
    cin >> n >> m;

    cin >> s;

    string nw = "?";
    for (ll i = 1; i <= n; i++)
        nw += '?';
    nw += s;

    s = nw;

    for (ll i = 1; i <= m; i++) {
        string a, b;
        cin >> a >> b;

        ll l = 0, r = 0;
        for (ll i = 1; i < a.size(); i++)
            l *= 10, l += a[i] - '0';
        for (ll i = 1; i < b.size(); i++)
            r *= 10, r += b[i] - '0';
        if (a[0] == 'c') l += n;
        if (b[0] == 'c') r += n;

        if (l == r) {
            gr[i + n].pb(l);
            continue;
        }

        gr[i + n].pb(l);
        gr[i + n].pb(r);
    }

    for (ll steps = 0; steps < n + m; steps++) {
        if (steps % 2 == 0) {
            for (ll i = n + m; i > n; i--) {
                if (s[i] == '?')
                    continue;

                if (s[i] == '0') {
                    if (gr[i].size() == 1) {
                        s[gr[i][0]] = '0';
                        continue;
                    }
                    s[gr[i][0]] = '0';
                    s[gr[i][1]] = '0';
                } else {
                    if (gr[i].size() == 1) {
                        s[gr[i][0]] = '1';
                        continue;
                    }
                    if (s[gr[i][0]] == '0')
                        s[gr[i][1]] = '1';
                    else if (s[gr[i][1]] == '0')
                        s[gr[i][0]] = '1';
                }
            }
        } else {
            for (ll i = n + 1; i <= n + m; i++) {
                if (s[i] != '?')
                    continue;

                if (gr[i].size() == 1) {
                    s[i] = s[gr[i][0]];
                    continue;
                }

                if (s[gr[i][0]] == '0' && s[gr[i][1]] == '0')
                    s[i] = '0';
                if (s[gr[i][0]] == '1' || s[gr[i][1]] == '1')
                    s[i] = '1';
            }
        }
    }

    for (ll i = n + 1; i <= n + m; i++)
        cout << s[i];
    cout << el;
    return;
}
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    //freopen(".in", "r", stdin);
    //freopen(".out", "w", stdout);

    int tests = 1;
    //cin >> tests;
 
    while (tests--) 
        solve();
    return 0;
}
/*
*/

Compilation message (stderr)

ili.cpp: In function 'void solve()':
ili.cpp:83:26: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |         for (ll i = 1; i < a.size(); i++)
      |                        ~~^~~~~~~~~~
ili.cpp:85:26: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |         for (ll i = 1; i < b.size(); i++)
      |                        ~~^~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 0 / 42
• Subtask 3: 0 / 51