src2020/2715_yumen/main.cpp

48 lines
1.2 KiB
C++

#include <cstdio>
#include <iostream>
using namespace std;
inline int maxs(int yi, int er)
{
return yi > er ? yi : er;
}
int main()
{
int n, m, a[100001] = { 0 };
scanf("%d", &n);
for (int i = 1; i <= n; i++) {
scanf("%d", &a[i]);
}
int num[100001] = { 0 }, id[100001] = { 0 };
int tou = 0, wei = 0;
scanf("%d", &m);
for (int i = 1; i <= m; i++) {
int x, y;
scanf("%d%d", &x, &y);
if (id[wei] > x) {
while (tou < wei && id[tou] < x) {
tou++;
}
for (int j = id[wei] + 1; j <= y; j++) {
while (tou <= wei && num[wei] < a[j]) {
wei--;
}
wei++;
num[wei] = a[j];
id[wei] = j;
}
} else {
tou=wei=x;
tou++;
for (int j = x; j <= y; j++) {
while (tou <= wei && num[wei] < a[j]) {
wei--;
}
wei++;
num[wei] = a[j];
id[wei] = j;
}
}
printf("%d\n", id[tou]);
}
}