paper/scissor/rocket

#include <iostream>
#include<stdlib.h>
#include<cmath>
using namespace std;

int main()
{
    int r = 0, s = 1, p = 2, n, size;
    cout << "enter the size of tries" << endl;
    cin >> size;
    for (int i = 1; i <= size; i++) {
        cout << "enter 0 for rock, 1 for Siccor, 2 for papaer" << endl;
        cin >> n;
        if (n == 0) {
            if (rand() % 3 == 1)
                cout << "You're won, you choosed a Rock and computer choosed a scissor" << endl;
            else if (rand() % 3 == 2)
                cout << "You're lost, you choosed a Rock and computer choosed a paper" << endl;
        }
        else if (n == 1) {
            if (rand() % 3 == 2)
                cout << "You're won, you choosed a Scissor and computer choosed a paper" << endl;
            else if (rand() % 3 == 0)
                cout << "You're lost, you choosed a Scissor and computer choosed a rock" << endl;
        }
        else if (n == 2) {
            if (rand() % 3 == 0)
                cout << "You're won, you choosed a Paper and computer choosed a Rock" << endl;
            else if (rand() % 3 == 1)
                cout << "You're lost, you choosed a Paper and computer choosed a Scissor" << endl;
        }
        else
            cout << "Enter a right number" << endl;
    }
    system("pause");
    return 0;
}