/* This is sample grader for the contestant */
#include <bits/stdc++.h>
using namespace std;
//#define LOCAL
#ifndef LOCAL
#include "rail.h"
#endif // LOCAL
#ifdef LOCAL
typedef struct Station {
int index;
int type;
int location;
int L,R;
}STATION;
long long cnt;
static int S,SUBTASK;
static STATION stations[10004];
int cmp_fun_1(const void *a,const void *b)
{
STATION c,d;
c = *(STATION*)(a);
d = *(STATION*)(b);
return c.location < d.location ? -1 : 1;
}
int cmp_fun_2(const void *a,const void *b)
{
STATION c,d;
c = *(STATION*)(a);
d = *(STATION*)(b);
return c.index < d.index ? -1 : 1;
}
void now_I_want_to_getLR(){
int now = stations[S-1].index,i;
for(i=S-2;i>=0;i--){
stations[i].R = now;
if(stations[i].type==2) now = stations[i].index;
}
now = stations[0].index;
for(i=1;i<S;i++){
stations[i].L = now;
if(stations[i].type==1) now = stations[i].index;
}
}
int getDistance(int x,int y)
{
cnt++;
if(x==y) return 0;
if(x<0 || x>=S || y<0 || y>=S) return -1;
if(stations[x].location > stations[y].location){
int tmp = x;
x = y;
y = tmp;
}
int ret = 0;
if(stations[x].type==1 && stations[y].type==1){
ret = stations[stations[y].R].location-stations[x].location+stations[stations[y].R].location-stations[y].location;
}else if(stations[x].type==1 && stations[y].type==2){
ret = stations[y].location-stations[x].location;
}else if(stations[x].type==2 && stations[y].type==2){
ret = stations[x].location-stations[stations[x].L].location+stations[y].location-stations[stations[x].L].location;
}else if(stations[x].type==2 && stations[y].type==1){
ret = stations[x].location-stations[stations[x].L].location+stations[stations[y].R].location
-stations[stations[x].L].location+stations[stations[y].R].location-stations[y].location;
}
return ret;
}
#endif
const int N = 5010;
int d[N][N];
int par[N];
int Find(int u) {
return (u == par[u] ? u : par[u] = Find(par[u]));
}
int Union(int u, int v) {
if ((u = Find(u)) == (v = Find(v))) return 0;
par[v] = u;
return 1;
}
int vis[N], mind[N];
void findLocation(int n, int first, int location[], int stype[]) {
memset(d, -1, sizeof(d));
auto get = [&](int u, int v) {
if (u == v) return 0;
if (u > v) swap(u, v);
if (d[u][v] == -1) d[u][v] = getDistance(u, v);
return d[u][v];
};
location[0] = first;
stype[0] = 1;
for (int i = 0; i < n; ++i) mind[i] = 1e9;
auto add = [&](int u) {
for (int v = 0; v < n; ++v)
mind[v] = min(mind[v], get(u, v));
vis[u] = 1;
};
add(0);
for (int T = 1; T < n; ++T) {
int u = -1;
for (int v = 0; v < n; ++v)
if (vis[v] == 0 && (u == -1 || mind[u] > mind[v])) u = v;
int v = -1;
for (int w = 0; w < n; ++w)
if (vis[w] && get(u, w) == mind[u]) v = w;
stype[u] = 3 - stype[v];
if (stype[u] == 2) location[u] = location[v] + get(u, v);
else location[u] = location[v] - get(u, v);
add(u);
}
// for (int u = 0; u < n; ++u) cout << location[u] << ' ';
}
#ifdef LOCAL
void getInput()
{
int g;
g = scanf("%d",&SUBTASK);
g = scanf("%d",&S);
int s;
for (s = 0; s < S; s++) {
int type, location;
g = scanf(" %d %d",&type,&location);
stations[s].index = s;
stations[s].location = location;
stations[s].type = type;
stations[s].L = -1;
stations[s].R = -1;
}
qsort(stations, S, sizeof(STATION), cmp_fun_1);
now_I_want_to_getLR();
qsort(stations, S, sizeof(STATION), cmp_fun_2);
}
int serverGetStationNumber()
{
return S;
}
int serverGetSubtaskNumber()
{
return SUBTASK;
}
int serverGetFirstStationLocation()
{
return stations[0].location;
}
int main()
{
int i;
getInput();
cnt = 0;
int location[10005];
int type[10005];
int ok = 1;
findLocation(S, serverGetFirstStationLocation(),location, type);
if(SUBTASK==3 && cnt>S*(S-1)) ok = 0;
if(SUBTASK==4 && cnt>3*(S-1)) ok = 0;
for (i = 0; i < S; i++)
if(type[i]!=stations[i].type || location[i]!=stations[i].location)
ok = 0;
if(ok==0) printf("Incorrect");
else printf("Correct");
return 0;
}
#endif // LOCAL
