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48
S2OJ/1493/1493.cpp
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48
S2OJ/1493/1493.cpp
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#include <iostream>
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#include <string>
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using std::cin;
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using std::cout;
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const char endl = '\n';
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const int N = 25;
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int r, p, s, f[1 << N];
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std::string sr[N], sp[N], ss[N];
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int highbit(int x) {
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return 32 - __builtin_clz(x) - 1;
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}
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int main() {
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std::ios::sync_with_stdio(false);
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cin.tie(nullptr);
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cin >> r >> p >> s;
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sr[0] = "R", sp[0] = "P", ss[0] = "S";
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for (int i = 1; i <= 20; i++) {
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f[1 << i] = i;
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}
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for (int i = 1; i <= 20; ++i) {
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sp[i] = std::min(sr[i - 1] + ss[i - 1], ss[i - 1] + sr[i - 1]);
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sr[i] = std::min(ss[i - 1] + sp[i - 1], sp[i - 1] + ss[i - 1]);
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ss[i] = std::min(sp[i - 1] + sr[i - 1], sr[i - 1] + sp[i - 1]);
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}
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if (f[r + p + s] == -1) {
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cout << "IMPOSSIBLE" << endl;
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} else if (r != p && r != s && p == s && std::abs(r - s) == 1) {
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cout << sr[f[r + p + s]] << endl;
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} else if (p != r && p != s && r == s && std::abs(p - r) == 1) {
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cout << sp[f[r + p + s]] << endl;
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} else if (s != p && s != r && p == r && std::abs(s - p) == 1) {
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cout << ss[f[r + p + s]] << endl;
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} else {
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cout << "IMPOSSIBLE" << endl;
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}
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return 0;
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}
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