#include<algorithm>
#include<cstdio>
const int N = 1000001;
const int P = 1000000007;
int availableSince[N];
int possibleWays[N];
int maxTeams[N];
int c[N];
int d[N];
int main(){
int n;
scanf("%d", &n);
maxTeams[0] = 0;
possibleWays[0] = 1;
for(int i = 0; i < n; i++)
scanf("%d%d", &c[i], &d[i]);
int minc = *std::min_element(c, c + n);
int maxd = *std::max_element(d, d + n);
for(int i = 1; i <= n; i++){
std::fill(availableSince + minc, availableSince + c[i - 1], i);
std::fill(availableSince + d[i - 1] + 1, availableSince + maxd + 1, i);
int maxTeams0 = -N;
for(int j = c[i - 1]; j <= d[i - 1]; j++)
if(availableSince[j] <= i - j)
maxTeams0 = std::max(maxTeams0, maxTeams[i - j]);
maxTeams[i] = maxTeams0;
if(maxTeams0 >= 0){
for(int j = c[i - 1]; j <= d[i - 1]; j++)
if(availableSince[j] <= i - j && maxTeams[i - j] == maxTeams0){
possibleWays[i] += possibleWays[i - j];
if(possibleWays[i] >= P)
possibleWays[i] -= P;
}
maxTeams[i]++;
}
}
if(maxTeams[n] > 0)
printf("%d %d\n", maxTeams[n], possibleWays[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 | #include<algorithm> #include<cstdio> const int N = 1000001; const int P = 1000000007; int availableSince[N]; int possibleWays[N]; int maxTeams[N]; int c[N]; int d[N]; int main(){ int n; scanf("%d", &n); maxTeams[0] = 0; possibleWays[0] = 1; for(int i = 0; i < n; i++) scanf("%d%d", &c[i], &d[i]); int minc = *std::min_element(c, c + n); int maxd = *std::max_element(d, d + n); for(int i = 1; i <= n; i++){ std::fill(availableSince + minc, availableSince + c[i - 1], i); std::fill(availableSince + d[i - 1] + 1, availableSince + maxd + 1, i); int maxTeams0 = -N; for(int j = c[i - 1]; j <= d[i - 1]; j++) if(availableSince[j] <= i - j) maxTeams0 = std::max(maxTeams0, maxTeams[i - j]); maxTeams[i] = maxTeams0; if(maxTeams0 >= 0){ for(int j = c[i - 1]; j <= d[i - 1]; j++) if(availableSince[j] <= i - j && maxTeams[i - j] == maxTeams0){ possibleWays[i] += possibleWays[i - j]; if(possibleWays[i] >= P) possibleWays[i] -= P; } maxTeams[i]++; } } if(maxTeams[n] > 0) printf("%d %d\n", maxTeams[n], possibleWays[n]); else printf("NIE\n"); return 0; } |
English