Submission #681845

#	Time	Username	Problem	Language	Result	Execution time	Memory
681845		Vladth11	ZigZag (COCI17_zigzag)	C++14	80 / 80	192 ms	16232 KiB

zigzag

#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")

#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "

using namespace std;
typedef pair <int, int> pii;
typedef long long ll;

const int NMAX = 100001;
const int VMAX = 41;
const int INF = 1e9;
const int MOD = 1000000009;
const int BLOCK = 318;
const int base = 31;
const int nrbits = 21;

vector <int> v[2][27];
string s[NMAX];
string org[NMAX];
int indice[27];

int main() {
#ifdef HOME
    ifstream cin(".in");
    ofstream cout(".out");
#endif // HOME
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n, m, i, maxim = 0;
    cin >> n >> m;
    for(i = 1; i <= n; i++){
        cin >> s[i];
        org[i] = s[i];
      	for(int j = 0; j < s[i].size(); j++) s[i][j]++;
        maxim = max(maxim, (int)s[i].size());
    }
    for(i = 1; i <= n; i++){
        while(s[i].size() < maxim){
            s[i] += 'a';
        }
    }
    maxim--;
    for(i = 1; i <= n; i++)
    v[1 - (maxim%2)][0].push_back(i);
    for(i = maxim; i >= 0; i--){
        int act = i%2;
        int last = 1 - act;
        for(int j = 0; j < 27; j++){
            for(auto x : v[last][j]){
                v[act][s[x][i] - 'a'].push_back(x);
            }
            v[last][j].clear();
        }
    }
    while(m--){
        char c;
        int ind;
        cin >> c;
        ind = c - 'a';
      	ind++;
        cout << org[v[0][ind][indice[ind]]] << "\n";
        indice[ind]++;
        if(indice[ind] == v[0][ind].size()) indice[ind] = 0;
    }
    return 0;
}

Compilation message (stderr)

zigzag.cpp: In function 'int main()':
zigzag.cpp:37:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |        for(int j = 0; j < s[i].size(); j++) s[i][j]++;
      |                       ~~^~~~~~~~~~~~~
zigzag.cpp:41:27: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   41 |         while(s[i].size() < maxim){
      |               ~~~~~~~~~~~~^~~~~~~
zigzag.cpp:66:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |         if(indice[ind] == v[0][ind].size()) indice[ind] = 0;
      |            ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 80 / 80