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34 lines
714 B
C++
34 lines
714 B
C++
#include <cstdio>
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int a[10010], f[20010], map[1001001], idx;
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int main()
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{
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int n, m;
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scanf("%d%d", &n, &m);
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for (int i = 1, x; i <= n; i++)
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{
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scanf("%d", &x);
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if (!map[x])
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map[x] = ++idx;
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a[i] = map[x];
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}
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for (int i = 1, x, y; i <= m; i++)
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{
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char ch;
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scanf("%s%d%d", &ch, &x, &y);
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if (ch == 'R')
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{
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if (!map[y])
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map[y] = ++idx;
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a[x] = map[y];
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}
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else
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{
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int ans = 0;
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for (int j = x; j <= y; j++)
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if (f[a[j]] != i)
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ans++, f[a[j]] = i;
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printf("%d\n", ans);
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}
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}
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return 0;
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} |