Submission #988061

#	Time	Username	Problem	Language	Result	Execution time	Memory
988061		wood	Seats (IOI18_seats)	C++17	Compilation error	0 ms	0 KiB

seats

#include "seats.h"
#include <bits/stdc++.h>  
using namespace std;
 
typedef long long ll;
typedef pair<int,int> p32;
typedef pair<ll,ll> p64;
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
#define vi vector<int>
#define vp32 vector<p32>
#define fast_cin() ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define MOD %1000000007
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template <class T>
using Tree =
    tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define int ll
//never guess
//never debug without reviewing code
//never try adding ones or substracting them
//only step by step debug when necessay

namespace potato{
    int H,W; vi R,C;
}
vector<bool> res;
int ressum = 0;
vi rmin,rmax,cmin,cmax;

void give_initial_chart(int H, int W, std::vector<int> R, std::vector<int> C) {
    potato::H = H, potato::W = W, potato::R = R, potato::C = C;
    int n = H*W;
    res.resize(n);
    rmin.resize(n); rmax.resize(n);  cmin.resize(n); cmax.resize(n);
    rmin[0] = R[0], rmax[0] = R[0], cmin[0] = C[0], cmax[0] = C[0];
    for (size_t i = 1; i < H*W; i++)
    {
        rmin[i] = min(rmin[i-1],R[i]); rmax[i] = max(rmax[i-1],R[i]);
        cmin[i] = min(cmin[i-1],C[i]); cmax[i] = max(cmax[i-1],C[i]);
        if(i+1==(rmax[i]-rmin[i]+1)*(cmax[i]-cmin[i]+1)){
            ressum++;
            res[i] = true;;
        }
    }
}

int swap_seats(int a, int b) {
    using namespace potato;
    swap(R[a],R[b]); swap(C[a],C[b]);
    if(a>b) swap(a,b);
    rmin[0] = R[0], rmax[0] = R[0], cmin[0] = C[0], cmax[0] = C[0];
    for(int i = a; i<b; i++){
        if(res[i]) ressum--;
        res[i] = false;
        rmin[i] = min(rmin[i],R[i]); rmax[i] = max(rmax[i],R[i]);
        cmin[i] = min(cmin[i],C[i]); cmax[i] = max(cmax[i],C[i]);
        if(i+1==(rmax[i]-rmin[i]+1)*(cmax[i]-cmin[i]+1)){
            ressum++;
            res[i] = true;
        }
    }
    return ressum;
}
// int main(int argc, char const *argv[])
// {
//     give_initial_chart(1,1,{0},{0});
//     return 0;
// }

Compilation message (stderr)

seats.cpp: In function 'void give_initial_chart(ll, ll, std::vector<long long int>, std::vector<long long int>)':
seats.cpp:40:26: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   40 |     for (size_t i = 1; i < H*W; i++)
      |                        ~~^~~~~
seats.cpp:44:15: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} [-Wsign-compare]
   44 |         if(i+1==(rmax[i]-rmin[i]+1)*(cmax[i]-cmin[i]+1)){
      |            ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/cck1M3w8.o: in function `main':
grader.cpp:(.text.startup+0x22f): undefined reference to `give_initial_chart(int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
/usr/bin/ld: grader.cpp:(.text.startup+0x2ae): undefined reference to `swap_seats(int, int)'
collect2: error: ld returned 1 exit status