Submission #781163

#	Time	Username	Problem	Language	Result	Execution time	Memory
781163		Ozy	Homework (CEOI22_homework)	C++17	13 / 100	113 ms	118624 KiB

Main

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
#define lli long long int
#define debug(a) cout << #a << " = " << a << endl
#define debugsl(a) cout << #a << " = " << a << ", "
#define rep(i,a,b) for(int i = (a); i <= (b); i++)
#define repa(i,a,b) for(int i = (a); i >= (b); i--)
#define pll pair<lli,lli>

struct x {
    lli tipo;
    lli h[2];
    lli apu;
    lli res;
    lli tam;
};

string st;
lli pos,cont,a;
stack<lli> pila;
vector<x> nodos;
x trash;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> st;
    pos = 0;
    cont = 1;
    nodos.push_back(trash);
    pila.push(0);

    while (pos < st.size()) {

        //debugsl(pos);
        //debug(st[pos]);

        a = nodos[ pila.top() ].apu++;
        nodos[ pila.top() ].h[a] = cont;
        nodos.push_back(trash);
        pila.push(cont);

        if(st[pos] == 'm') {

            if (st[pos+1] == 'i') nodos[cont].tipo = 1;
            else nodos[cont].tipo = 2;

            cont++;
            pos += 4;
            continue;
        }

        nodos[cont].tam = 1;
        nodos[cont].res = 1;
        pila.pop();

        while (nodos[pila.top()].apu == 2) {

            lli act = pila.top();
            pila.pop();
            lli izq = nodos[act].h[0];
            lli der = nodos[act].h[1];

            nodos[act].tam = nodos[izq].tam + nodos[der].tam;
            nodos[act].res = nodos[izq].res + nodos[der].res - 1;

            lli a,b,c,d;

            a = b = 0;
            if(nodos[izq].tipo == 1) b = nodos[izq].tam - nodos[izq].res;
            else a = nodos[izq].tam - nodos[izq].res;

            c = d = 0;
            if(nodos[der].tipo == 1) d = nodos[der].tam - nodos[der].res;
            else c = nodos[der].tam - nodos[der].res;

            if (nodos[act].tipo == 1) nodos[act].res += a + c - min(a,c);
            else nodos[act].res += b + d - min(b,d);

            pos++;
        }

        cont++;
        pos += 2;
    }

    cout << nodos[1].res;

    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:36:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     while (pos < st.size()) {
      |            ~~~~^~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 13
• Subtask 3: 13 / 13
• Subtask 4: 0 / 30
• Subtask 5: 0 / 34