Compilare: main.cpp: In member function 'InParser& InParser::operator>>(int&)': main.cpp:42:3: warning: this 'while' clause does not guard... [-Wmisleading-indentation] while (!isdigit(c = read_ch())); ^~~~~ main.cpp:43:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while' n = c - '0'; ^ main.cpp: At global scope: main.cpp:66:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main() ^ main.cpp: In function 'int main()': main.cpp:83:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < divs[v[i]].size(); j++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:85:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(last < divs[v[i - 1]].size() && divs[v[i - 1]][last] < divs[v[i]][j]) ~~~~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:88:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(last < divs[v[i - 1]].size() && divs[v[i - 1]][last] == divs[v[i]][j]) ~~~~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:99:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < divs[v[i]].size(); j++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:101:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(last < divs[v[i + 1]].size() && divs[v[i + 1]][last] < divs[v[i]][j]) ~~~~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:104:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(last < divs[v[i + 1]].size() && divs[v[i + 1]][last] == divs[v[i]][j]) ~~~~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:120:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < divs[v[l]].size() && este == false; j++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:122:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(last < divs[v[r]].size() && divs[v[r]][last] < divs[v[l]][j]) ~~~~~^~~~~~~~~~~~~~~~~~~ main.cpp:125:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dr[l][j] >= r || (last < divs[v[r]].size() && divs[v[r]][last] == divs[v[l]][j] && dr[l][j] == st[r][last])) ~~~~~^~~~~~~~~~~~~~~~~~~ main.cpp:131:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < divs[v[r]].size() && este == false; j++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:133:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(last < divs[v[l]].size() && divs[v[l]][last] < divs[v[r]][j]) ~~~~~^~~~~~~~~~~~~~~~~~~ main.cpp:136:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(st[r][j] <= l || (last < divs[v[l]].size() && divs[v[l]][last] == divs[v[r]][j] && st[r][j] == dr[l][last])) ~~~~~^~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:22:38: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result]