#include <cstdio>
#include <iostream>
#include <algorithm>
#include <cstring>
#include <vector>
#include <set>
#include <map>
#include <cmath>
#include <list>
#include <ctime>
#include <sstream>
#include <queue>
#include <stack>
#include <bitset>
#include <unordered_set>
#include <unordered_map>
using namespace std;
typedef vector<int> vi;
typedef pair<int,int> pii;
typedef long long ll;
typedef short int sint;
#define FOR(x, b, e) for(int x=(b); x<=(e); ++x)
#define FORD(x, b, e) for(int x=((int)(b))-1; x>=(e); --x)
#define REP(x, n) for(int x=0; x<(n); ++x)
#define VAR(v,n) typeof(n) v=(n)
#define ALL(c) c.begin(),c.end()
#define SIZE(x) ((int)((x).size()))
#define FOREACH(i,c) for(VAR(i,(c).begin());i!=(c).end();++i)
#define PB push_back
#define ST first
#define ND second
#define mp(x,y) make_pair(x,y)
#define DEBUG 1
#define debug(x) {if (DEBUG)cerr <<#x <<" = " <<x <<endl; }
#define debugv(x) {if (DEBUG) {cerr <<#x <<" = "; FOREACH(it, (x)) cerr <<*it <<", "; cout <<endl; }}
#define REMAX(a,b) (a)=max((a),(b));
#define REMIN(a,b) (a)=min((a),(b));
#define wez(n) int (n); scanf("%d",&(n));
#define wez2(n,m) int (n),(m); scanf("%d %d",&(n),&(m));
const int N = 1001010;
const int MOD = 1000000007;
int c[N], d[N];
int maks[N], spos[N];
int n;
int main() {
scanf("%d", &n);
maks[0] = 0;
spos[0] = 1;
FOR(i, 1, n) {
scanf("%d %d", &c[i], &d[i]);
maks[i] = -1;
spos[i] = 0;
int currC = c[i], currD = d[i];
FOR(dl, 1, currD) {
if (maks[i - dl] != -1) {
if (dl >= currC) {
if (maks[i - dl] + 1 > maks[i]) {
maks[i] = maks[i - dl] + 1;
spos[i] = spos[i - dl];
} else if (maks[i - dl] + 1 == maks[i]) {
spos[i] = (spos[i] + spos[i - dl]) % MOD;
}
}
}
REMAX(currC, c[i - dl])
REMIN(currD, d[i - dl])
if (currC > currD) break;
}
//printf("%d: maks: %d, spos: %d\n", i, maks[i], spos[i]);
}
if (maks[n] != -1) {
printf("%d %d\n", maks[n], spos[n]);
} else {
printf("NIE\n");
}
return 0;
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 | #include <cstdio> #include <iostream> #include <algorithm> #include <cstring> #include <vector> #include <set> #include <map> #include <cmath> #include <list> #include <ctime> #include <sstream> #include <queue> #include <stack> #include <bitset> #include <unordered_set> #include <unordered_map> using namespace std; typedef vector<int> vi; typedef pair<int,int> pii; typedef long long ll; typedef short int sint; #define FOR(x, b, e) for(int x=(b); x<=(e); ++x) #define FORD(x, b, e) for(int x=((int)(b))-1; x>=(e); --x) #define REP(x, n) for(int x=0; x<(n); ++x) #define VAR(v,n) typeof(n) v=(n) #define ALL(c) c.begin(),c.end() #define SIZE(x) ((int)((x).size())) #define FOREACH(i,c) for(VAR(i,(c).begin());i!=(c).end();++i) #define PB push_back #define ST first #define ND second #define mp(x,y) make_pair(x,y) #define DEBUG 1 #define debug(x) {if (DEBUG)cerr <<#x <<" = " <<x <<endl; } #define debugv(x) {if (DEBUG) {cerr <<#x <<" = "; FOREACH(it, (x)) cerr <<*it <<", "; cout <<endl; }} #define REMAX(a,b) (a)=max((a),(b)); #define REMIN(a,b) (a)=min((a),(b)); #define wez(n) int (n); scanf("%d",&(n)); #define wez2(n,m) int (n),(m); scanf("%d %d",&(n),&(m)); const int N = 1001010; const int MOD = 1000000007; int c[N], d[N]; int maks[N], spos[N]; int n; int main() { scanf("%d", &n); maks[0] = 0; spos[0] = 1; FOR(i, 1, n) { scanf("%d %d", &c[i], &d[i]); maks[i] = -1; spos[i] = 0; int currC = c[i], currD = d[i]; FOR(dl, 1, currD) { if (maks[i - dl] != -1) { if (dl >= currC) { if (maks[i - dl] + 1 > maks[i]) { maks[i] = maks[i - dl] + 1; spos[i] = spos[i - dl]; } else if (maks[i - dl] + 1 == maks[i]) { spos[i] = (spos[i] + spos[i - dl]) % MOD; } } } REMAX(currC, c[i - dl]) REMIN(currD, d[i - dl]) if (currC > currD) break; } //printf("%d: maks: %d, spos: %d\n", i, maks[i], spos[i]); } if (maks[n] != -1) { printf("%d %d\n", maks[n], spos[n]); } else { printf("NIE\n"); } return 0; } |
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