#include <cstdio>
#include <climits>
int n, c[1000010], d[1000010], maxk[1000010], poss[1000010];
int main() {
scanf("%d",&n);
for (int i = 0; i < n; i++) {
scanf("%d%d",&c[i],&d[i]);
}
maxk[n] = 0;
poss[n] = 1;
for (int i = n-1; i >= 0; i--) {
int maxc = 0;
int mind = INT_MAX;
for (int j = i+1; j <= n; j++) {
maxc = maxc > c[j-1] ? maxc : c[j-1];
mind = mind < d[j-1] ? mind : d[j-1];
if (j-i >= maxc && j-i <= mind) {
if (maxk[i] < maxk[j]) {
maxk[i] = maxk[j];
poss[i] = poss[j];
}
else if (maxk[i] == maxk[j]) {
poss[i] += poss[j];
poss[i] %= 1000000007;
}
}
}
if (poss[i]) maxk[i]++;
}
if (poss[0]) {
printf("%d %d\n",maxk[0],poss[0]);
}
else
{
printf("NIE\n");
}
}
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 | #include <cstdio> #include <climits> int n, c[1000010], d[1000010], maxk[1000010], poss[1000010]; int main() { scanf("%d",&n); for (int i = 0; i < n; i++) { scanf("%d%d",&c[i],&d[i]); } maxk[n] = 0; poss[n] = 1; for (int i = n-1; i >= 0; i--) { int maxc = 0; int mind = INT_MAX; for (int j = i+1; j <= n; j++) { maxc = maxc > c[j-1] ? maxc : c[j-1]; mind = mind < d[j-1] ? mind : d[j-1]; if (j-i >= maxc && j-i <= mind) { if (maxk[i] < maxk[j]) { maxk[i] = maxk[j]; poss[i] = poss[j]; } else if (maxk[i] == maxk[j]) { poss[i] += poss[j]; poss[i] %= 1000000007; } } } if (poss[i]) maxk[i]++; } if (poss[0]) { printf("%d %d\n",maxk[0],poss[0]); } else { printf("NIE\n"); } } |
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